How to put data in various tabs into Pivot table

Dear all

I got a file that contains the monthly sales , using the month as the name of the tab.

Now I got a trouble of analysis them in a pivot table.

How can I put all data, into a pivot table ?

Appreciate your help

Eric

Attach a sample workbook (not a picture or pasted copy). Make sure there is just enough data to demonstrate your need. Include a BEFORE sheet and an AFTER sheet in the workbook if needed to show the process you're trying to complete or automate. Make sure your desired results are shown, mock them up manually if necessary.

Remember to desensitize the data.

Click on GO ADVANCED and then scroll down to Manage Attachments to open the upload window.