how to solve this question

quired 6 Kolby's Korndogs is looking at a new sausage system with an installed cost of $710.000. This cost will be depreciated straight-line to zero over the project's 6-year life, at the end of which the sausage system can be scrapped for $96,000. The sausage system will save the firm $205.000 per year in pretax operating costs, and the system requires an initial investment in net working capital of $57.000 What is the aftertax salvage value of the equipment? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g. 32.) Aftertax salvage value What is the annual operating cash flow? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g. 32.) OCF If the tax rate is 21 percent and the discount rate is 11 percent, what is the NPV of this project? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g. 32.16.)