One would think Bill Jelen is crazy. As "Mr.Excel" (www.MrExcel.com) he's an expert in using a spreadsheet to figure things out — so how does one write the formula for Free? Bill has some very ...

About the speaker: Bill Jelen is the host of MrExcel.com and the author of 61 books about Microsoft Excel, including Excel Gurus Gone Wild, Pivot Table Data Crunching and Excel 2019 Inside Out. Mr.