2. In the pop-up calculation field dialog box, enter A/C as the name, that is, the total value of column A divided by the total value of column B, and enter the formula: = a/c..
Click OK. You can also use an insert field when entering a formula, such as the total value a. You can select a below, and then click Insert Field.
Just click OK.
3. The effect is shown in the following figure: