Crack the Code: Excel Sheet Formulas Every User Should Know: By Sudeshna Paul Anyone who spends time around spreadsheets eventually learns that Excel has two personalities. On the surface, it’s just ...

I didn't realize how much time I spent on cleanups until regex let me stop.

Excel still takes hours out of your week. You write the same formulas by hand, fix broken data, and copy numbers between tabs before any real work starts.