You can add a zero before a number in Google Sheets and Excel using this tutorial. You need to change cell formatting or use function.

To insert multiple rows in Excel, first highlight the number of rows you want to add. Then, right-click the selected rows and click Insert in the context menu.

Rows in an Excel worksheet can be repeated a specified number of times with user-defined functions. The Selection.insert command can be used to insert rows in an Excel sheet and there is no need to ...