please solve & explain by giving the formulas as to how you arrived to the answer. (please dont use excel. you can use TVM Solver on Ti 84)

Foley Systems is considering a new investment whose data are shown below. The equipment would be depreciated on a straight-line basis over the project's 3-year life, would have a zero salvage value, and would require some additional working capital that would be recovered at the end of the project's life. Revenues and other operating costs are expected to be constant over the project's life. What is the project's NPV? (Hint: Cash flows are constant in Years 1 to 3.)