Your firm needs a machine which costs $210,000, and requires $36,000 in maintenance for each year of its 7 year life. After 3 years, this machine will be replaced. The machine falls into the MACRS...

Your firm needs a machine which costs $210,000, and requires $36,000 in maintenance for each year of its 7 year life. After 3 years, this machine will be replaced. The machine falls into the MACRS 7-year class life category. Assume a tax rate of 40% and a discount rate of 15%. What is the depreciation tax shield for this project in year 7?