can someone explain how to do figure this out?

Problem 2 Worcester Engines Corp. (WEC) is considering the acquisition of a new machine that would replace one of their old machines in use. The new machine costs $1 million (t=0), and its book value and market value will both be 0 at the end of its expected 4-year operating life. WEC decides to depreciate the new machine using a straight-line method over four years (t=1 to 4). The new machine takes up more space and WEC will need to move maintenance and cleaning supplies that used to be stored next to the machine to a small storage room that could otherwise be sublet for $20,000 a year after tax, at t=1 to t=4). The old machine was bought 8 years ago for $800,000 and is completely worthless now. The remaining book value of the old machine is 0. WEC paid $25,000 (before tax) for a study which indicates that the new machine will reduce manufacturing costs (before tax) by $220,000 annually (starting from t=1 until t4). Moreover, net working capital will be increased by $100,000 when the new machine is installed, and will reduce again by $100,000 at the end of the machine's operating life. WEC's corporate tax rate is fixed at 40%, and it uses a discount rate (required rate of return) of 10% to evaluate projects of this nature. Year 0 Year 1 Year 2 Year 3 Year 4 AEBIT: NA Minus taxes: NA NA Add depreciation: Capital acquisition or disposition: NA NA NA NA ANWC: NA NA NA Other cash flows (if any): Total Project Cash flow: PV(CF): Use the working table above to find the replacement project's NPV. Should WEC replace the old machines with the new one? Hint: Change in EBIT = Change in Revenue (if any) - Change in Costs (if any). If there is no change in revenue, change in EBIT is simply the opposite of change in costs