Select the table cell where you want your result. The Formula dialog box appears as shown. In Word you can do other calculations in table such as average production and so on.
Create a field with the volume of a parameter.
Select Insert Tab to Type and Use Mathematical Equations To go to the first step start opening your Ms. On the Table Tools Layout tab click the Formula button. Just switch to Insert tab and click Equation Insert New Equation to toggle on Equation Tools. It doesnt important where.