Yes, I can help you with that. Excel has a default setting that automatically removes trailing zeros from numbers when you open a CSV file. However, you can change this setting to preserve the zeros. Here's how:

1. Open Excel and click on the File tab.
2. Click on Options.
3. In the Excel Options dialog box, click on the Advanced tab.
4. Scroll down to the section labeled "When calculating this workbook" and find the option labeled "Automatically insert a decimal point".
5. Check the box next to "Automatically insert a decimal point".
6. Click OK to save the changes.

Now, when you open a CSV file in Excel, it will preserve the trailing zeros. If you have already opened the CSV file and lost the trailing zeros, you can still add them back by formatting the cells as text. Here's how:

1. Select the cells that contain the numbers you want to format.
2. Right-click on the selection and choose Format Cells.
3. In the Format Cells dialog box, click on the Number tab.
4. In the Category list, choose Text.
5. Click OK to save the changes.

Now, the cells will display the numbers with the trailing zeros. Keep in mind that formatting the cells as text will prevent you from using them in calculations, so you may want to convert them back to numbers if you need to perform any calculations.