Summarize this article in one sentence.
If you're working with numbers in a column, you can highlight the whole column by clicking the column letter. If your computer doesn't have a right mouse button, press Ctrl as you click with the left. A menu will appear. The Format Cells dialog will appear. " If any text is in the box, delete it now. Then, type 0.### into the box. You will no longer see extraneous zeros at the ends of your numbers.

Summary:
Highlight the cells with trailing zeros. Right-click the highlighted cells. Click Format Cells. Select Custom from the left column. Type a code into the box under "Type. Click OK.