Blue Line Machine shop is considering a four-year project to improve its production efficiency. Buying a new machine press for 480,000 is estimated to result in 195,000 in annual pretax cost savings. the press falls in the MACRS five year class, and it will have a salvage value at the end of the project of 81,000. the press also requires an initial investment in spare parts inventory of 21,000, along with an additional 2,600 inventory for each succeding year of the project. The shop's tax rate is 30 percent and the project's required return is 8 percent. Calculate the NPV of this project. Not using excel