please use excel to complete the problem and show the calculations. ty

ABC Company is considering a new project and has just purchased equipment that has a five-year life. The equipment costs $20 million and will be sold for 25% of its original cost in year 4. Use the MACRS depreciation schedule to compute the amount of depreciation and the book value for each year. If the tax rate is 21%, what is the after-tax salvage value in year 4