Math + Me = Bad

Blogging from my new iPhone! :))) Realise that my maths is really bad..hv been presenting wrong figures in my monthly presentations! Feel so dumb. And no one has discovered e fishy figures! Gosh,no one is listening!! Mr Tan enlightened me on calculating variance and discount...i can so imagine him being a tutor during his uni days,patiently repeating the maths logic to a clueless student like me (he shd be banging his head/vomitting blood within). Got to redo my figures before my presentation tmr morn! Hw can I be so gong n muddle headed?!? Wondered hw I go through A/E maths/ statistics/calculus in school? So did I really buy my Chanel bags at a discount? Now I am confused...