Warmack Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for $450,000 is estimated to result in $180,000 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 $76,000. The press also requires an initial investment in spare parts inventory of $18,000, along with an additional $2,300 in inventory for each succeeding year of the project. The shops tax rate is 35 percent and its discount rate is 9 percent

MACRS schedule

Year	Three-year	Five-year	Seven-year
1	33.33%	20%	14.29%
2	44.45%	32%	24.49%
3	14.81%	19.20%	17.49%
4	7.41%	11.52%	12.49%
5		11.52%	8.93%
6		5.76%	8.92%
7			8.93%
8			4.46%

Calculate the NPV of this project