if a company is considering buying a system that costs 450,000 with an estimated 10-year life and a salvage value of 70,000, the estimated operating results with the new machine are, incremental...

if a company is considering buying a system that costs 450,000 with an estimated 10-year life and a salvage value of 70,000, the estimated operating results with the new machine are, incremental revenue = 180,000, incremental expenses = 123,000 which is made up by,  expenses other than depreciation = 85,000, depreciation (straight-line basis) = 38,000, and incremental income = 57,000, and all revenue and expenses other than depreciation use cash, how do I find the annual net cash flow, time of the payback period, return on investment percentage, and the Net present value, discounted at an annual rate of 6% (present value of $1 due in 10 years, discounted at 6%, is 0.558; present value of $1 received annually for 10 years, discounted at 6%, is 7.360)?