Looking for excel formulas please.

Masters Machine Shop is considering a four$-$year project to improve its production efficiency. Buying a new machine press for $$796,800$ is estimated to result in $$265,600$ in annual pretax cost savings. The press falls in the MACRS five$-$year class $($MACRS Table$),$ and it will have a salvage value at the end of the project of $$116,200.$ The press also requires an initial investment in spare parts inventory of $$33,200,$ along with an additional $$4,980$ in inventory for each succeeding year of the project.

If the shop's tax rate is $23$ percent and its discount rate is $14$ percent, what is the NPV for this project?