Why spend an hour when one formula can do it in seconds?

I have a client who asked me if I could help him figure something out based on some sales reports. I said I'd look into it, but I'm not really much of an Excel user. Normally, I can figure this stuff ...

Have you ever found yourself staring at two Excel sheets, trying to figure out why the numbers just don’t add up? Reconciling your bank statement with your accounting records can feel like searching ...