A company is considering investing in a new machine that requires a cash payment of $52, 947 today. The machine will generate annual cash flows of $17, 432 for the next three years. Assume the company uses an 8% discount rate. Compute the net present value of this investment. (FV of $1, PV of $1, FVA of $1 and PVA of $1) (Use appropriate factor(s) from the tables provided. Negative amounts should be indicated by a minus sign.)