on excel please

Part 1 During the past year Grand Inc.'s accounts receivables decreased by $6,000, inventory increased by $1,000, accounts payable increased by $5,000 and accumulated depreciation increased by $5,000 while fixed assets increased by $10,000. Required: What was the effect on cash flows from changes in net working capital (NWC) over the year? Part 2 Using your answer in part 1, assume this initial CF related to Net Working Capital (NWC) in year 0 (i.e. when you start the project). Additionally, assume that the NWC remains constant until year five, when the project winds down and the NWC reverts back to normal. Required: a). What will be CF from a change in NWC in year 5? b) What impact did the CF impact of a change in NWC have on the project's NPV (assume a 10% discount rate)