It's not a fancy calculator or anything. It's just your standard, no frills, no nothing but the most basic of unctions calculator. There is nothing you can customize about it. All you've got are the basic 10 numbers, add, subtract, multiply, divide, equals, square root, and the memory buttons. And a little solar panel and a screen. You know, one of the ones from back when life was simpler. I don't remember offhand how many digits it has. Either way, I made a completely new spreadsheet and scrapped the other. And I stick with the calculator on my iPhone or computer. So, "problem" solved. Ahaha. Thanks for taking the time t explain, though. I appreciate it!