How To: Sum lookup items in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 320th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the SUMPRODUCT & SUMIF functions together to look up multiple items and add them in one cell.