Once you have created a formula, you can fill it into adjacent cells - no need to create the same formula over and over again. On a sheet, you can enter simple formulas to add, subtract, multiply, and divide two or more numeric values. Instead of reaching for your calculator, use Excel to do the math! Excel for Microsoft 365 for Mac Excel 2021 for Mac Excel 2019 for Mac Excel 2016 for Mac Excel for Mac 2011 More.