Examples of expressions - support.microsoft.com
You can use expressions to add, subtract, multiply, and divide the values in two or more fields or controls. You can also perform arithmetic operations on dates. For example, suppose you have a Date/Time field called RequiredDate. The expression =[RequiredDate] - 2 returns a Date/Time value equal to two days before the value in the RequiredDate field.
DA: 12 PA: 77 MOZ Rank: 82 Up or Down: Up