need explanation and answer

The Luna Corporation is trying to decide if they should purchase a Truck for hauling material which costs $625,400. The Truck will require $30,600 of working capital and major maintenance in years 3 , year 5 , and year 7. The major maintenance will cost $50,000 in years 3 and 5 and $65,000 in years 7 . The truck will increase the net income by $185,750 in years 1 through 4 , and $91,250 in years 5 through 7. At the end of year 7 , the company expects to sell the truck for 5% of the cost that they paid for it. Calculate the net present value of the Truck using a 10% rate of return. Show your work and indicate if the Luna Corporation should purchase the Truck. (Round to the nearest dollar)