A number format that lets you put zeros at the beginning of a number reference, like 00794411 for example.
Many utilities have zeros in front of the meter or company references(00794411), when paying invoices or bills, that have to be included to pay them and when corresponding with the utility companies, as it's not valid to them if the zeros aren't there. So there should be an option in the number formatting section for reference numbers including zeros in front, where it doesn't take away zeros in front of the reference, but lets you put as many zeros in front of it as you like.
you already can if the length is fixed.
use numberformat in your case as 00000000