Inyaniso engaziwayo yeJelly Belly

I-Cacringer Calculator

inyani engachazwanga yenkampani yejeli esiswini kunye neelekese

Iimbotyi zokuqala zejeli zenziwa ngumenzi weelekese ongaziwayo waseMelika kwiminyaka yoo-1800. Iilekese, zithambile ngaphakathi kwaye zilukhuni ngaphandle, zazimile njengembotyi kuba, iimbotyi zaziyinxalenye enkulu yokutya kwaseMelika ngelo xesha. Kuninzi okutshintshileyo kwitekhnoloji yeelekese ukusukela ngoko, kubandakanya nohlobo lwembotyi yejeli uninzi lwabantu olwaziyo. Namhlanje, xa ucinga ngeembotyi zejeli, kukho ithuba elihle lokuba ucinga ngeJelly Belly.

Iimbotyi zeJelly Belly zikude kwaye zikude, olona hlobo luthandwayo lweembotyi zejeli phaya. Abantu batya ngokwaneleyo iimbotyi ezingama-0.75 intshi ngonyaka ukuya Yenza isangqa kumhlaba ongaphezulu kwamaxesha amahlanu . Ukuba unokucinga ngevumba, kusenokwenzeka ukuba kukho incasa echanekileyo okanye efanayo yeJelly Belly, nokuba kunjalo ibarf kunye neekawusi ezinukayo (Andihlekisi) okanye icherry kunye nekhokhonathi. Kodwa kuninzi kakhulu kwiilekese kuneencasa ze-wacky. Nantsi yonke into oyifunayo malunga neembotyi zeJelly Belly jelly, ukusuka kumbona wayo weelekese ukuya kuhambo lwalo emajukujukwini.

UJelly Belly uqale njengenkampani egxile kumbona weelekese

Isisu sejeli saqala njengenkampani yombona weelekese

Ngelixa iiJelly Beans zichaza iJelly Belly Candy Co namhlanje, inkampani kuqala yafumana udumo lwayo njengomenzi wolunye unyango: umbona weelekese . Ngexesha elithile malunga ne-1898, yintoni eyayisaziwa ngokuba yiGoelitz Confectionery Inkampani eCincinnati, eOhio yaqala ukwenza umbona weelekese. Ngoku ka imbali epapashwe yinkampani , Umbona weelekese wenza uGoelitz 'inkosi yamasimi ombona weelekese,' kwaye wanceda inkampani ukuba ihlale kwishishini ngoxinzelelo kunye neemfazwe zombini. Ngapha koko, inkampani yeyona nkampani indala yokwenza umbona kwimbali.

Umbona weelekese ubuzenzele ngokwawo ngelo xesha, kwaye yayiyilekese enkulu yokwenza ngaphambi koomatshini bale mihla. Abenzi beelekese babeka uluhlu ngalunye lweelekese ezinyibilikisiweyo ngesandla kumlinganiso olungileyo wombala ngamnye kule mithathu, ke umsebenzi wawunzima kwaye ufuna ukuchaneka okukhulu, ukutsho nje okuncinci. Olu luhlu lwenze ukuba umbona weelekese ume ngaphandle xa kuthelekiswa nazo zonke iilekese ezinemibala eqinileyo emva kwemini. Namhlanje, umbona weelekese ungaphezulu kokuwuthanda okanye ukuwuthiyile ukunyanga kuneembotyi zejeli, kodwa iJelly Belly Candy Co isenza kwaye ithengise ingqolowa yeelekese unyaka wonke.

Kwakukho uMnu. UJelly Belly 'ogama linguDavid Klein

Mnu. Jelly Belly wembali umntu wokuqala Youtube

Iimbotyi zeJelly Belly ezaziwa ngabantu kwaye bazithanda namhlanje zonke ziyabulela kuDavid Klein. Ngo-1976, uKlein wenza uphawu kwihlabathi leelekese ngokudala uhlobo olutsha lwembotyi yejeli eyayinencasa ngaphakathi kunye neqokobhe langaphandle elinencasa. Ezi iimbotyi zejeli zikwasebenzisa iincasa ezazingahambelani nexesha, njengevatala, licorice, kunye nengcambu yebhiya. Indalo yakhe wayibiza ngokuba yiJelly Belly ngembeko yemvumi enguMkhokeli weBelly, ngokuka Tampa Bay Amaxesha , Ukumenza uMnu.Jelly Belly, umoniker awukhuthazayo.

Xa ifayile ye- Imithombo yeendaba edibeneyo wabanjwa ngumoya weelekese yakhe kunye nevenkile yakhe yeJelly Belly, uKlein walungiselela umgca wabathengi bobuxoki ukuba balinde ngaphandle kweshishini lakhe laseMzantsi California. Isebenzile, kwaye udumo lwakhe lwanda. Uvele njengendwendwe ebusuku kakhulu Umboniso kaMike Douglas ngo-1977 , apho waziswa njengo Mnu Jelly Belly ngelixa wayenxibe umnqwazi omkhulu kunye nehempe enophawu lweJelly Belly.

Wenza enye imbonakalo yokukhuthaza, kubandakanya nefoto kwi Abantu imagazini apho engenahempe kwiJelly Belly ebhafini egcwele amanzi. Ukuphela kweminyaka elishumi, isitayile sikaKlein njengo Mnu. Jelly Belly sasizakuphela. Wathengisa onke amalungelo kwiJelly Belly brand kwiGoelitz Candy Inkampani, eyayenza iGoelitz Mini Jelly Beans ngelo xesha, ngo-1980 nge-4.8 yezigidi zeedola.

iiprotheyini zenkulumbuso zishukuma zilungile kuwe

URonald Reagan wenza iimbotyi zeJelly Belly zityiwa kwi-White House

Imbali kaRonald Reagan Jelly Belly kwiNdlu eNtshonalanga Ijeli Belly / Facebook

Ngaphambi kokuba uRonald Reagan abe ngumongameli, wayeyindoda enomdla wokutshaya umbhobho. Waqala ukutya iGoelitz Mini Jelly Beans ukunceda ukuyeka ukutshaya umbhobho ngaxeshanye ebalekela ukuba yirhuluneli yaseCalifornia. Inkampani yaseHakland Goelitz Candy esekwe e-Oakland yanikezela ngoReagan ngokuthumela ngenqanawa ngenyanga ukumnceda akhabe umkhwa ngexesha lamaxesha amabini kaReagan, ngokweThala leencwadi laseReagan . Ukuhanjiswa kwaqhubeka emva kwexesha lakhe kwiofisi yaseCalifornia, nangona batshintshela ukuthunyelwa kweembotyi zeJelly Belly endaweni yeembotyi zeGoelitz eziqala ngo-1976.

Ubudlelwane bebusaqhubeka xa u-Reagan waphumelela unyulo luka-Mongameli ngo-1980. Ukumiliselwa kwakhe kwabonisa iJelly Beans ebomvu, emhlophe, naluhlaza (enyanisweni, incasa yeblueberry yadalelwa lo mcimbi kanye), kwaye yayisisiqalo nje eso. Ukuthunyelwa rhoqo kweJelly Belly kuye kwi-White House ngexesha lamaxesha amabini kaReagan, kwaye wayesaziwa ngokudlulisa ingqayi phambi kweentlanganiso. Yayisisenzo esamkelekileyo njengokuqokelela ulwazi, ngamanye amaakhawunti.

Kutheni intshontsho lilunge kangaka

'Ungatsho okuninzi malunga nomlingiswa wefella nokuba ukhetha wonke umbala omnye okanye ubambe nje isandla,' utshilo uReagan, ngokwe-Encyclopedia Britannica .

Ubudlelwane babulungile kubathengisi beJelly Belly, nabo. Kunyaka omnye emva kokuba kuphume igama malunga nokukhethwa kweelekese zikaReagan, ukuthengisa kuye kwavela kwi-8 yezigidi ukuya kwi-16 yezigidi, ngokutsho INew York Times .

UJelly Belly uphume kwiincasa ezisibhozo waya ngaphezulu kwe-100

Ngaphezulu kwe-100 jelly Belly flavour

Xa iHerman Goelitz Candy Inkampani yaqala ukusebenza kunye neJelly Belly brand ngo-1976, zazikhona iincasa ezisibhozo : I-Cherry kakhulu, i-Root Beer, i-Coda Soda, iTangerine, i-Apple eluhlaza, iLamuni, iLicorice kunye noMdiliya. Okungakumbi nangaphezulu kuye kwongezwa ngokuhamba kwexesha, kunye ne iindidi ezininzi zeencasa . I-Butter Popcorn, incasa yokuqala enencasa, yaphuma ngo-1989, kwaza kwakhutshwa uthotho lweembotyi ezimuncu ngo-1993. uharry Potter abalandeli babebambisene ngeembotyi zejeli iBertie Botts Zonke iiBhontshisi ezinencasa ezikhutshwe ngo-2000.

Inani elipheleleyo leencasa elidalwe ngaphezulu kweminyaka eyi-100, ngokwenkampani . Namhlanje, kukho malunga ne-50 yeencasa ezisemthethweni. Eyona ndawo ithandwayo ibandakanya i-Butter Popcorn, i-Cherry kakhulu, i-Cotton Candy, i-Watermelon kunye ne-Green Apple. Kubonakala ngathi kuhlala kukho indawo yokuninzi, nangona kunjalo, kunye nokusebenzisana ngumdlalo olungileyo nawo. UJelly Belly wenze iincasa ngokuthanda kukaGqirha uPepper, I-A & W Ingcambu yeBhiya , kunye Tabasco , ukubala nje ezimbalwa. Ukugcina abalandeli belophu, inkampani ine ' incasa ezintsha iphepha kwiwebhusayithi yeJelly Belly ukwazisa abalandeli ngalo naluphi na ulongezo olutsha.

Igama lenkampani latshintshela kuJelly Belly ngo-2001

UJelly Belly walitshintsha igama ngo-2001 Ijeli Belly

Usapho lakwaGoelitz lubandakanya igama losapho xa bevula inkampani yabo yokuqala yeelekese kwinkulungwane yama-20. Elo gama lahlala ngaphezulu kwekhulu leminyaka ngokudibana, utshintsho kwindawo, kunye nokwahlula ikomkhulu. Ekuqaleni kwexesha le-Jelly Belly kwiminyaka yee-1970s, bekukho iinkampani ezimbini ezingabanini bakaGoelitz: iHerman Goelitz Candy Inkampani enekomkhulu eliseCalifornia, kunye neGoelitz Confectionery Inkampani enekomkhulu elikufutshane neChicago.

Ke ngo-2001, la mabini adityaniswa aza athatha igama lemveliso yawo ethandwa kakhulu ukuba abe yiJelly Belly Candy Inkampani, ngokwembali yenkampani . Utshintsho kwigama belungathethi ukuba kutshintsho kugxilwe- inkampani iyaphawula ukuba iJelly Belly Candy Inkampani yenze ngaphezulu kwe-100 yeelekese ngelo xesha- kodwa ibonakalisile ukuba yeyiphi imveliso ethengiswayo evela kuyo. Iimbotyi zeJelly Belly jelly zenze iipesenti ezingama-85 zentengiso ngo-2008, ngoku ka Inkqubo ye- INew York Times .

Usihlalo kaJelly Belly ungene phantsi komlilo ngenxa yokunikela kwingxowa-mali yamalungelo okulwa ne-transgender

Usihlalo wejelly esiswini unikelwe kumalungelo okulwa ukuhanjiswa Twitter

U-Herman G. Rowland Sr., umzukulwana womsunguli wenkampani yoqobo u-Gustav Goelitz, uncedise ekuxhaseni iinzame zokurhoxisa umthetho wase-California okhusela amalungelo e-transgender ngo-2013. Umthetho osayilwayo ofuna ukuba abafundi be-transgender bavunyelwe ukuba 'bathathe inxaxheba kwiinkqubo zesikolo ezahlulwe ngokwesondo kunye nemisebenzi, kubandakanya amaqela eembaleki kunye nokhuphiswano, kwaye basebenzise izixhobo ezihambelana nobuni bakhe, nokuba sesini esidweliswe kwiirekhodi zomfundi,' ngoku ka HuffPost . URowland wayengusihlalo webhodi kwiNkampani yeJelly Belly Candy xa wayesenza lo mnikelo.

Umnikelo ka-2013 ubuyile ukuzoyikisa inkampani ngo-2015 emva komlingisi uAnna Kendrick Ithunyelwe , 'Ndifumene nje ngokungacwangciswanga uJelly Belly wanikela ngephulo lokulwa abafundi abagqithisileyo ngo-2013. Ngaba uyazazi naziphi na ezinye iindlela endinokuzinqwenela ngazo? Ikwakhokelele kwiphulo le #BoycottJellyBelly kuFacebook, ngoku ka Ushishino ngaphakathi . Ukubuyela umva akuzange kubangele ukusabela okukhulu ngokwaneleyo kulo naluphi na utshintsho lweshishini olwenzekayo, nangona kunjalo, njengoko uRowland engusihlalo webhodi ukuza kuthi ga kulo mhla.

UJelly Belly wenza iimbotyi zezeMidlalo kwiimbaleki, emva koko wagwetyelwa intengiso engeyonyani

Iimbotyi zezemidlalo zeJelly Belly zeembaleki UChris Graythen / imifanekiso kaFetty

Xa ucinga ngento iJelly Belly enokukwenza yona, 'yonyusa intsebenzo yeembaleki' mhlawumbi ayisiyiyo eyokuqala efika engqondweni. Kodwa oko kuthetha ukuba awuyityi i-jelly Belly jelly yeembotyi elungileyo. Iimbotyi zezeMidlalo ijeli yeembotyi yenzelwe iimbaleki kwaye zizaliswe ziicarbohydrate, iielectrolyte, kunye neevithamini B1, B2, B3, noC. Iindidi ezingama-20 ezahlukeneyo yeeBhontshisi zezeMidlalo ezineempawu ezahlukileyo, kubandakanya i-Jelly Beans ene-Enzitting ilayishwe ngecaffeine 'ukunceda ukubasa umzimba ngexesha lokuzilolonga kakhulu.' Ayisiyiyo yonke into enika uJelly Belly ezinye zeembaleki eziyinyani. Inkampani ibine Iqela elide lokubaleka ngebhayisikile kude kube ngo-2018.

ezona ziqendu zishushu

Asinguye wonke umntu ohamba kunye nemiba yezempilo yeembotyi zeMidlalo, nangona kunjalo. Kwi-2017, umfazi waseCalifornia ogama linguJessica Gomez wafaka isimangalo nxamnye neJelly Belly Candy Co ngokukhohlisa abathengi ngokubiza iswekile njengejusi yomhlanga. Ezi zimbini zinye kwaye ziyafana, kodwa umthetho uthi ukuphakanyiswa kukhethwe 'ukwenza imveliso ibonakale ifaneleke ngakumbi kwiimbaleki kwaye ingaphantsi kweswiti,' ngokwe ILos Angeles Times .

Impendulo kaJelly Belly: 'Bububhanxa obu.' Inkundla yavuma ngokukhawuleza ulichithile ityala , okuthetha ukuba usenakho ukubamba iiBhontshisi zakho zezeMidlalo nanini na xa ungathanda ngolwazi olupheleleyo lokuba incindi yomhlanga yomphunga sishukela nje.

Iimbotyi zeJelly Belly zithunyelwe emajukujukwini

Iimbotyi zeJelly Belly emajukujukwini

Uthando lukaReagan ngoJelly Bellys aluzange lubeke iilekese kwiNdlu yeWhite House, lubabeka nasemkhathini. Ukugcinwa kweembotyi zejeli kulayishwe kwisiphekepheke uMceli mngeni ngo-1983 kunye nowaseMelika usomajukujuku wokuqala, uSally Ride, ngesicelo sikaMongameli Reagan, ngokwe IEncyclopedia Britannica . Ubhontshisi obomvu, omthubi, omnyama, kunye nomhlophe beza ngqo kumongameli eplastikini ye-zip-lock bag ebhalwe 'Ukuncoma kweNdlu eNtshonalanga', ngokwe- UPI ingxelo yeendaba ngelo xesha.

Yayiyintengiso entle yeJelly Belly kwaye ikwabonakala ngathi iyonwabisa kakhulu oosomajukujuku . Iikhamera zethelevishini zibambe oosomajukujuku bephosa iimbotyi kwi-zero gravity kwaye bazibambe emilonyeni yabo. Iifoto ezisemthethweni kolu hambo wathimba iimbotyi ezandleni zoosomajukujuku ngokunjalo. Umqhubi wenqwelomoya uFrederick Hauck uxele ukuba wabaphosa eRide kunye noosomajukujuku uJohn Fabian, kunye UPI Iinkcukacha zebali zokuba uHauck wafotwa esenza into 'eyaziwayo' nasemoyeni.

UJelly Belly akayedwa kwindawo yeelekese. A i-bevy yeelekese bayenzile baphuma kweli hlabathi, kubandakanya IiM & M , ITwix , Milky Way, Mentos, umbona weelekese, Iithagethi ezimnandi, Snickers , Starburst, kunye Iindebe zeRean Peanut Butter .

Iimbotyi zejeli zikaJelly Belly ezinencasa yeebhiya azihambanga kakuhle kubazali

Iibhontshisi zebhiya eziYilwayo zeJelly Belly Twitter

Kukho konke ukunambitheka kweJelly Belly onokuyicinga, kodwa kwathatha de kwaba ngu-2014 kwinkampani ukukhupha ubhontshisi obumnandi. Kwakuloo nyaka, uJelly Belly wakhupha i-hefeweizen-ephefumlelweyo i-Draft Beer Jelly Belly njengembeko yooyise wokuqala waseJamani. Igolide enemibala yeJelly Belly yayinencasa yengqolowa eswiti kunye nevumba 'elincinci'. Kodwa kule meko, ngaphandle kokuba yayinuka ibhiya kwaye ingcamla ibhiya, yayingenabhiya uqobo.

'Oku kuthathe malunga neminyaka emithathu ukugqibelela,' u-Ambrose Lee, umphathi weJelly Belly kunye nomphathi wophuhliso, yatsho kwingxelo ka-2014 . 'Iresiphi ibandakanya izinto eziyimfihlo ephezulu, kodwa ndiyakuxelela ukuba ayinabutywala.'

Abanye abazali bebengonwabanga ncam xa becinga ngeembotyi zejeli ezinencasa yeebhiya. Abantu bakhalaza kwiphepha leJelly Belly kuFacebook ukuba incasa iya kukhuthaza ukusela kwabangaphantsi kwabantwana kunye nokwenzakalisa ukubuyela kwiziselo ezinxilisayo, ngoku ka Ushishino ngaphakathi . Oko abo bantu babonakala ngathi bayakulibala kukuba uJelly Belly wenze iincasa zotywala ukusukela ngo-1977 xa yaqala yanencasa kaMai Tai. I-Strawberry Daiquiri, i-Piña Colada, i-Margarita, kunye ne-Mojito flavour nabo bajoyine iJelly Belly umgca ngamaxesha ahlukeneyo kule minyaka idlulileyo. Iinkxalabo azinyanzelanga inkampani yeelekese ukuba icothise iincasa zayo zotywala. Namhlanje, usengathenga umgca Uyilo lweembotyi zebhiya Kunye nomgca weCocktail Classics.

kwenzeke ntoni ekhitshini elisikiweyo

Kukho iindlela zokupheka ezisemthethweni zeJelly Belly

Iiresiphi ezisemthethweni zokudibanisa isisu

Zimbini iintlobo eziphambili zabadli beJelly Belly kweli hlabathi: Abo bazityayo nganye nganye ukuze babenencasa yomntu ngamnye, kunye nabo babamba isandla kwangoko. Embindini ngabo baphatha i-flavour nganye njengesithako kwirisithi ngokudibanisa ezimbini okanye nangaphezulu ukwenza into entsha ngokupheleleyo. Kwelo qela labantu liphakathi, uJelly Belly udale 'zokupheka' ezisemthethweni zejeli yebhontshisi ekulula ukulandela.

Thatha, umzekelo, tres leches cake. Akukho bhontshisi inye yedessert ethandekayo, kodwa uya kusondela kwincasa xa udibanisa imbotyi enye yeFrench Vanilla, iCoconut ezimbini, iPopcorn enye eButter, kunye neeMarshmallows ezimbini eziGwele. Okanye unokukhetha ukuphuma kwe-jelly Belly tequila xa urhawuzelela ivenkile yokutyela ngokudibanisa iimbotyi ezimbini zeMargarita, enye ye-Sunkist orange kunye ne-Cherry enye. Eminye imixube ilula njengokutya iimbotyi ezimbini ngaxeshanye - kufakwa ipeyinti kwijasipberry isosi eyenziwe ngebhontshisi enye yeJuice kunye nembotyi enye yeRaspberry, umzekelo, okanye icola eyenziwe ngokudibanisa iLime enye nembotyi enye yeCinnamon. Inkqubo ye- uluhlu olude lokudityaniswa ngokusemthethweni iyaqhubeka.

Ukudibanisa iincasa kuye kwathandwa ngokwaneleyo ukuba uJelly Belly enze umgca obizwa ngokuba Umxube weRisipe Esebenzisa incasa enye yeqokobhe langaphandle kunye nenye ngaphakathi. Nangona kumnandi ngakumbi ukudlala umpheki ngokwakho.

I-Cherry kakhulu iyeyona ithandwa kakhulu yiJelly Belly ngaphandle nje kweminyaka embalwa

Eyona flavour iJelly Belly ithandwayo yicherry kakhulu Ijeli Belly

I-Cherry kakhulu yayiphakathi kweencasa ezisibhozo zokuqala ezakhutshwa ngo-1976. Ngamanye amaxesha abantu bafumana izinto kakuhle kwitrayi yokuqala, kwaye eli yayilelinye lamaxesha. Ngokwenkampani , I-Cherry kakhulu yayiyeyona flavour ithandwayo de kwaba ngu-1998. Kwakuloo nyaka, incasa ye-Butter Popcorn entsha ke yathatha indawo yokuqala. Kuyabonakala ukuba, abantu babenemincili malunga nencasa yokuqala enencasa, kodwa hayi ixesha elide. I-Cherry kakhulu yathatha indawo ephezulu ngo-2003 xa yayithengisa 'nje' i-8 yezigidi yeembotyi ngaphezulu kwenani lesibini le-Butter Popcorn. UJelly Belly ubeka ukuba isizathu sokuthandwa kwayo kukusetyenziswa kwejusi yenyani yokwenyani xa usenza ilekese.

UJelly Belly ufumene iindlela ezininzi ukwenza imali kuthando oluhlala luhleli lweCherry kakhulu. Kukho isiraphu yekona yeCherry kakhulu, kunye neeLollipops zeCherry kakhulu kwaye iilekese . Kukho iJelly Belly Jelly Bean Chocolate Dips eneCherry kakhulu ngaphakathi, enencasa into efana necheri egqunywe ngetshokholethi. Iindlela ezininzi zokuzama i-Cherry kakhulu yinto enkulu yokudibanisa, njengoko i-popcorn egqunywe ngetshokholethi i-Popcorn ingenayo nje into efanayo.

Umnumzana wokuqala uJelly Belly waqala ukuzingela ubuncwane uWilly Wonka-esque

I-jelly bean willy wonka njengokhuphiswano lwetikiti legolide Youtube

UKlein usenokuba wayila iJelly Belly yoqobo, kodwa khange abandakanyeke kwinkampani ukusukela ngeminyaka yoo-1980. Oko akuzange kumnqande ekubeni aqale ukuzingela ubuncwane ukuze aphumelele umzi-mveliso weelekese njengaye UWilly Wonka , nangona.

NgoSeptemba 2020, uKlein wabhengeza ukuba uthengisa amatikiti ayi-1 000 kwilizwe ngalinye ngeedola ezingama-49.99. Elinye lala matikiti liya kuba litikiti legolide elimilo wethegi yegolide enemibala yegolide, ngokwe-CNN . Nabani na oyifumanayo uyaphumelela i $ 5,000, ikhosi yokwenza iilekese kwiYunivesithi yaseWisconsin-Madison, kunye nomzi-mveliso weelekese ukuqala inkampani yabo. U-Klein uxelele i-CNN ukuba inxenye yokhuthazo emva kokhuphiswano yayikukuba 'umhlaba ufuna into eyakhayo ukuze ususe iingqondo zabo kwiingxaki zabo.'

Isibhengezo sokuzingela ubuncwane sasinkulu kwizithembiso kodwa sasifutshane kwiinkcukacha. Kakhulu kangangokuba iJelly Belly Candy Inkampani kuye kwafuneka ukuba ihlukane nokhuphiswano. Kwi ingxelo esemthethweni iposwe kuFacebook Inkampani icacisile ukuba ayibandakanyekanga kwaphela kwaye ayikhange ibe nolwalamano noMnumzana Klein ukusukela ngo-1980 ngethuba ifumana uphawu lwentengiso 'lweJelly Belly.

Iclaloria Calculator