Hello everyone!!!

I received a request from a coworker regarding custom formatting some numbers in his spreadsheet. Those numbers are serial numbers of 20 characters long. Sometimes in my files I use this custom number formatting ###0 and its enough for the data I handle. But when I tried to use it in his spreadsheet, the following shows:

8456891070060510000

The cell must look like this: 08456891070060510302

The reason to have it like this is due to a Delivery Program requirement to deliver Set-top Units for repair. The Delivery Program do not recognize other format than the above. My coworker takes the data from a spreadsheet, and the spreadsheet needs a custom number format to display the correct number.

Can anyone help me to find a custom number format to be able to display as my coworker need it??
We will really appreciate the favor.

Best regards and please have a great day.