Talk:Contractor Extra Resources Required/@comment-2A00:1028:96C2:D512:10B0:2166:E400:EED7-20180303000305/@comment-37720539-20181216040442

that is if you add up everything. However since some items are delivered which then are used to build a structure. You need to make sure you are cancelling out the ones that cross each other. i.e. Deliver 200 nails and then build a structure that cost 50 nails to build. Should be 150 and not 250 as you already have delivered 200 nails.