Also, I need an explanation.

Republic intends to start assembling 4,700 broadcast spreader kits in weeks 2, 4, and 6. The gross requirements for the gear and rotor plate assembly have already been given to you. For the remaining items, you will need to figure out the gross requirements. All scheduled receipts, lead times, and beginning inventory levels are shown. . Note that cotter pins appear twice in the bill of material. Click the icon to view the BOM for the Model Number 540 Broadcast Spreader. Click the icon to view the MRP records. Construct the material requirements plan for item Gear and rotor plate assembly (enter your responses as whole numbers). Gear and rotor plate assembly: Lead Time = 1 week; Minimum order quantity = 3,400 Week 1 2 3 4 5 6 Gross requirements 4,700 4,700 4,700 Scheduled receipts Projected ending inventory: 1,900 1900 600 600 0 0 0 Net requirements 0 2800 0 4100 0 4700 Planned receipts 0 3400 0 4100 0 4700 Planned orders 3400 0 4100 0 4700 0 Construct the material requirements plan for item Wheels (enter your responses as whole numbers). Wheels: Lead Time = 1 week; Minimum order quantity = 1,800 Week 1 2 3 4 5 6 0 Gross requirements Scheduled receipts Enter your answer in the edit fields and then click Check