Please Answer with details on the calculation. No excel spreadsheet answer. Handwork

7. Project Evaluation Symon Meats is looking at a new sausage system with an installed cost of $267,000. This cost will be depreciated straight-line to zero over the project's five-year life, at the end of which the sausage system can be scrapped for $30,000. The sausage system will save the firm $87,000 per year in pretax operating costs, and the system requires an initial investment in net working capital of $11,000. If the tax rate is 34 percent and the discount rate is 10 percent, what is the NPV of this project