How to set calculation precision?

To set the precision of the calculation results, there are two methods:
1) Right-click in the editing area to open the menu image.png , click "Precision", a window will open image.png , set the number of decimal places to be retained, and click OK.
2) Click "Advanced" > "Precision" on the menu bar. A window will open image.png Set the number of decimal places to be retained and click OK.