You need to group quantities that are multiples of each other. For example if some are 1500, 3000, 9000 you would put 1 of the 1500 piece, 2 of the 3000 piece, and 6 of the 9000 piece. If you end up with one or two that just won't divide by the rest, then round up to the closest divisible number. It will be less costly to give the customer extra prints than to make more plates and do another press run.
Personally, I would make a quick excel chart with each piece name and the quantity, then sort by quantity. Then start your grouping. This will also act as a nice check list for you and production to make sure nothing gets missed.
Personally, I would make a quick excel chart with each piece name and the quantity, then sort by quantity. Then start your grouping. This will also act as a nice check list for you and production to make sure nothing gets missed.