How to Calculate invoices and trade discounts in MS Excel

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 43rd installment in his "Excel Business Math" series of free video lessons, you'll learn how to complete an invoice and calculate trade discounts.