Is there a way to have Solidworks return the number of packs of an Item I will use in an assembly?

For example:

If Widget A has 20 Black Oxide Alloy Steel Socket Head Screws 1/4" - 20 by 1/2 which I'm going to buy in packs of 100 from Mcmaster.

Is there a way to attach a property to the SolidWorks file for the screw such that when my top level assembly has 4 of Widget A it will tell me that I need one box of screws but, when I have 6 of Widget A, the BOM will call for two boxes of screws?