1. First, open the software. We open or create a table with decimal places in the software, and then click the "View" option at the top left of the interface, and a drop-down box will appear below it. Select the Design View option in the drop-down box.

2. Then a Save As window will pop up on the interface. After entering the table name in the window, click OK.

3. Then find the data table that needs to set decimal places in the table, click the table, and a drop-down button will appear in the table. We click the drop-down button and select the "number" option in the drop-down box that appears.

4. Next, the area shown below will appear at the bottom of the interface, where we can find the option of "decimal places" and click the "automatic" table behind this option.

5. Then a drop-down button will appear in the lower right corner of the "Automatic" table. Click this button and a drop-down box will appear. We can choose the decimal places in the drop-down box according to our own needs.

6. After completing all the above steps, we find the Save button in the upper left corner of the interface, click this button, and we can successfully set the decimal places and save the table with decimal places in the computer.