http://tvtropes.org/pmwiki/pmwiki.php/Ymmv/WhereInTimeIsCarmenSandiegoCase9 YMMV / Where in Time is Carmen Sandiego? Case 9 Following Go To Recap YMMV VideoExamples Create Subpage - Create New - Analysis Archive Awesome Characters DerivativeWork… FanficRecs FanWorks Fridge Funny Haiku Headscratchers Heartwarming ImageLinks ImageSource Laconic MediaNotes Newsletter NightmareFuel PlayingWith Quotes QuoteSource ReferencedBy Shocking TearJerker Timeline Trivia WMG That One Level: If you're not good at math and you don't have a calculator, doing the subtraction might take a while- and then you have to remember how to correctly put the numbers down.