Need help solving 18 and I'm not sure if 17 is solved correctly

Problem 18:

Using the planned orders generated in Problem 17, complete inventory records for components AB501, AB511, and AB521. Use the lot size rule, lead time, and usage information given in Problem 12, shown again below. Note any problems that may occur.

Problem 17: Fill in the partially completed inventory record shown here. Parent: None = Item: AB500 Lot Size Rule: POQ = 3 Lead Time: 2 weeks Children: AB501, AB511, AB521 1 2 3 4 5 100 200 100 400 0 0 Gross Requirements: Scheduled Receipts: Projected Available: Planned Orders: O 300 100 0 0 400 0 0 500 0 6 7 8 9 10 200 100 200 100 200 500 0 0 300 Gross Requirements: Scheduled Receipts: Projected Available: Planned Orders: 37 300 200 0 200 0 300 0 Time (weeks) Lead Usage Factor Beginning Inventory Lot Size Component Rule AB501 L4L AB511 FOQ = 300 AB521 POQ = 2 2 2 1000 2 1 650 650 2 2