How do I insert multiple columns at once in Excel?

How do I insert multiple columns at once in Excel?

1, first we open to edit the Excel spreadsheet as shown

2, left-drag select a blank column, you want to insert how many columns you choose how many columns, and then the right key to copy as shown

3, the right mouse button you want to insert the position as shown

4, then click "Insert Copy Cell" as shown

5, after the completion of the above operation, you can quickly insert multiple columns of cells as shown