I am working on the following problem and I do not know where to start. Can you help me understand the process to solve? So I can solve the others?

Given the Master Production Schedule and the Bill of Material that follow, complete the MRP records for 1603, 1735, K4902, and K5568. Certain planned order release information has been provided so you can fill in the MRP records. Explain or show how you populated the Gross Requirements line for each MRP record.

Part 1603 has a scheduled receipt of 100 pieces in period 1 Part K4902 has a scheduled receipt of 150 pieces in period 1 Part K5568 has a scheduled receipt of 75 pieces in period 2 Part 1735 has no scheduled receipts Part 1603 Safety Stock =10 Lead Time =2 Lot Size = lot for lot Part 1735 Safety Lead Lot Siz Part K5568 [ Safety Lead Lot Si Part K4902