The arithmetic operator in Excel can be used to perform basic calculations such as addition, subtraction, multiplication, and division. To use the arithmetic operator, simply type the operator into the formula bar and then enter the numbers or cell references that you want to use in the calculation. For example, to add two numbers, type “=” followed by the two numbers separated by a plus sign (+). To subtract two numbers, type “=” followed by the two numbers separated by a minus sign (-). To multiply two numbers, type “=” followed by the two numbers separated by an asterisk (*). To divide two numbers, type “=” followed by the two numbers separated by a forward slash (/).
