Please get me the right answer

I posted this question 2 times and both of the experts had the wrong answer.

Please provide me the excel formulas.

Kinky Copies may buy a high-volume copier. The machine costs $100,000 and this cost can be fully depreciated immediately. Kinky anticipates that the machine actually can be sold in 5 years for $30,000. The machine will save $20,000 a year labor costs but will require an increase in working capital, mainly paper supplies, of $10,000. The firm's marginal tax rate is 21%, and the discount rate is 8%. (Assume the networking capital will be recovered at the end of Year 5.) What is the NPV of this project? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.) NPV