$3.$ A computer system can be purchased for $$90,000$ with an additional $$10,000$ required for installation. It is expected to last for five years, with a $$20,000$ salvage value at that time. It will be depreciated for income tax purposes using the straight$-$line method. The net value added $($revenues less expenses$)$ that can be attributed to the machine is expected to be $$25,000$ each year. The company will have to borrow $$25,000$ of the capital needed, and plans to pay the loan back over $3$ years using equal annual payments. The loan interest rate is $18\%$ compounded annually. An effective income tax rate of $21\%$ is used by the company and the after$-$tax MARR is $15\%$ per year. What is the after$-$tax cash flow for each year? What is the after$-$tax net present value of this investment?