If you are trying to write a number in Excel or Google Sheets that starts with zero (0), you may not do that due to the default settings. In that case, you should follow this tutorial to enter zero ...

Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.

Excel has a surprising limitation that you may not discover until you try to enter more than 15 digits in a cell. The application can only store numbers with15 digits of precision.