(Calculating free cash flows) Vandelay Industries is considering a new project with a 4-year life with the following cost and revenue data. This project will require an investment of $140,000 in new equipment. This new equipment will be depreciated down to zero over 4 years using the simplified straight-line method and has no salvage value. This new project will generate additional sales revenue of $112,000 while additional operating costs, excluding depreciation, will be $68,000. Vandelay's marginal tax rate is 35 percent. What is the project's free cash flow in year 1?

Please help by writing out formulas so I can better understand how to set up the equations for future problems. Thank you for your help.