How do I generate multiple pages Box [1,2,3...] of [X]

I have a box label form and it all works great but we would like to be able to automatically generate sequential box labels.  So on the form we would have a [Total Boxes] form field.  If the user put in "5" then on the labels we would generate a different label for each box e.g. 1 of 5, 2 of 5, 3 of 5, 4 of 5, 5 of 5.  I would be happy with this happening at the time they are printed, or generating a new PDF with all the pages.  Either way this needs to be a very simple process for the end user of the forms. Any ideas?