how do i get this?

01 02 03 0405 06 07 08 09 10 11 12 Gross 0 60 0 50 0 70 0 40 0 60 0 50 requirements Projected on 60 ? ? ? ? ? ? ? ? ? ? ? hand Planned ???????????? order release The lead time is 2 weeks. The current on hand inventory, at the beginning of week 1 is 60 units. If the order cost is $80 per order and the inventory cost is $1 per unit per period, and the order quantity is the computed part period (or a multiple of the computed part period) when it is necessary to place an order, what is the total cost for the 12 week period