Please, I need a detailed explanation

You firm just bought a new machine. The machine cost $1,850,000. The machine will be operated for 5 years. It will then be sold for its salvage value of $220,000. The CCA rate is 28%. The tax rate is 36%. The required rate of return is 9% compounded annually. The asset class will remain open. Assume the half-year rule is in effect. What is the present value of the CCA tax shield? Your answer should be accurate to two decimal places. Answer: (444,238.94) Your boss has asked you to calculate the present value of the salvage value of a piece of equipment. The company paid $1,500,000 for the piece of equipment. The will be operated for 7 years. The company will sell the piece of equipment for its salvage value of $230,000 7 years from today. The required rate of return is 11.8% compounded annually. What is the present value of the salvage value? Your answer should be accurate to two decimal places. Answer: (105,350.16)