Create a Simple Formula
The Spreadsheet allows you to perform calculations on data in cells using formulas. A formula is a string expression that starts with the equal sign ("="). Formulas can contain constants, math operators, functions, cell references, etc.
The Spreadsheet provides the capability to use the Formula Bar, which is the bar at the top of a worksheet, to enter and edit formulas.
For example, if you wish to add 1 to the product of 2 and 5, type the following formula in the cell in which you wish to insert the formula or in the Formula Bar.
=2*5+1
Press ENTER. The result appears in the cell in which you inserted the formula.