present value from year 1-6 is wrong

help me find the solution

Matheson Electronics has just developed a new electronic device that it believes will have broad appeal. The company has performed marketing and cont studies that revealed the following information New equipment would have to be acquired to produce the device. The equipment would cost $644000 and have a six-year useful ife After six years, it would have a salvage value of about 55.000 b Sales in units over the next six years are projected to be as follows Year Sales 1 18.000 2 23,000 3 25.000 27.000 Production and sales of the device would require working of 50 000 to face accounts receivable inventories and day-to-day cash noods This working capital would be released at the end of the project's life d The devices would sell for $55 och variable costs for production adation and sales would be $40 per unit e Fixed costs for salaries, maintenance property taxes, insurance, and straight line depreciation on the equipment would total $169,000 per year (Depreciation is based on cost less salvage value) To gain rapid entry into the market, the company would have to advertise heavily The advertising program would be Amount of Yearly Year Advertising 1-2 $ 80.000 3 5 69 000 4-6 $ 59.000 The company's required rate of return is 15% 2-a: Using the data computed in (1) above and other data provided in the problem determine the net present value of the proposed investment (Any cash outflows should be indicated by a minus sign) Now 5 (444000) (60.000 $ 35,000 $100.000 $ 210.000 $250,000 $ 250 000 $ 250.000 60.000 Cost of equipment Working capital Yearly net cash flows Release of working capital Salvage value of equipment Total cash flows Present value Net present value 5.000 250,000 5 316.000 126250 s 136,512 5 (504 000) 5 5 504.000s $ 232,852 160.000 $ 210,000 $250.000 5 120.900 5 1381805 143 000 $ 35 000 $ 73.950 s