Franks is looking at a new sausage system with an installed cost of $$385,000.$ This depreciated straight$-$line to zero over the project$$s five$-$year life, at the end of which the sausage system can be scrapped for $$60,000.$ The sausage system will save the firm $$135,000$ per year in pretax operating costs, and the system requires the firm to raise its level of net working capital by $$35,000($i$.$e$.,$ in all years, the level of NWC will be $$35,000$ plus the level without this system$).$ The system does not impact the other business activities of the firm.

If the tax rate is $21$ percent and the discount rate is $10$ percent, what is the NPV of this system?