As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 2nd installment in his "Excel Business Math" series of free video lessons, you'll learn how to create math formulas in MS Excel using addition, subtraction, multiplication, division, exponents, and parentheses. See how 2+2*2 is not equal to...