You often use Excel to compute data in tables, but if your data is in a Word document, you can also perform calculations directly in Word without needing external calculation apps, saving you time.
This is also a quite handy and useful feature for those who frequently need to generate reports in Word.
This article below instructs you on how to calculate row and column totals in Word 2013.
Step 1: First, place your mouse cursor in the cell of the table where you want to enter the calculation formula. Then, select the Layout tab under Table Tools.

Step 2: Next, choose ƒx Formula in the Data section to open the Formula dialog box.

Step 3: In the Formula dialog box, enter the formula in the Formula section. By default, it calculates the sum on the left side (=SUM(LEFT)) , but in this example, we need to perform multiplication on the left side, so replace the formula with =PRODUCT(LEFT).
In the Number format section, define the formats for the calculation result. After setting up, press OK to apply the changes.

The result will be displayed immediately within the selected cell.

Note: If you want to display the calculation formula of any data cell, right-click on that cell and select Toggle Field Codes, then the formula will be shown.

When you need to display the result again, repeat the right-click action and choose Toggle Field Codes.
Next, to calculate the total amount, perform the same steps as above but the formula is =SUM(ABOVE) because it sums the cells above.

The result will also be displayed immediately when you close the Formula dialog box.

Note: Formulas do not automatically update when you add new rows or columns, but you can manually update them by right-clicking on the cell containing the formula and selecting Update Field or pressing F9 key.
So, from now on, you can quickly calculate on the rows and columns of the table in Word. Good luck to you all!
