solve step by step mathematically please

Skaro Conference Centre is considering investing in some new audio visual equipment. The required equipment has a 7-year life. Also, some new working capital would be required, and would be recovered at the end of the project's life. Revenues and cash operating costs are expected to be constant over the project's 7-year life. Additional information is as follows: WACC - 13% Tax rate = 35% CCA rate 30% Net capital investment in fixed assets - $630,000 Required new working capital - $40,000 Salos revenues, each year = $540,000 Cash operating costs, each year = $350,000 Expected salvage value in year 7 = $0 PV of Capital Cost Allowance Tax Shield PVCCATS = 144,988.17 Find the NPV and recommend whether the project should be accepted. Show your work a) What is the present value of the operating cash flows (after tax)? 2 marks b) What is the present value of the ending cash flows? 1 mark c) Find the NPV and what is the project decision? 1 mark