Add a matching method.
1. Take the tabular data in the figure as an example. You need to add a comma to every three numbers in a series of numbers in each copied cell.
2. Select all tables. Click the small button as shown.
3. In the pop-up panel, click the number to select the key item, and then click: Customize.
4. In the edit box under Type, enter: 000,000;
5. Click OK again. The effect is shown in the figure.