Estimate FCFF for the terminal year of project Z. Revenue is 1600 . COGS is 50% of Revenue. Depreciation is 200 . The book value of the machine is 0 . The firm is still able to sell it for 200 . SG\&A is 200 . Advertising is 100 . The tax rate is 20%. The firm has invested a total of 500 NWC in the project and can release all of them at the end of this year. What is the FCFF