How do you calculate the PVIFA for the equation: EAC = NPV / Annutiy factor

How would you use the financial calculator to solve for EAC and PVIFA?

You are evaluating two different silicon wafer milling machines. The Techron I costs $270,000, has a three-year life, and has pre-tax operating costs of $69,000 per year. The Techron II costs $475,000, has a five-year life, and has pre-tax operating costs of $36,000 per year. Both milling machines are in Class 8 (CCA rate of 20 percent per year). Assume a salvage value of $45,000. If your tax rate is 35 percent and your discount rate is 10 percent, compute the EAC for both machines. Which do you prefer? Why? You are evaluating two different silicon wafer milling machines. The Techron I costs $270,000, has a three-year life, and has pre-tax operating costs of $69,000 per year. The Techron II costs $475,000, has a five-year life, and has pre-tax operating costs of $36,000 per year. Both milling machines are in Class 8 (CCA rate of 20 percent per year). Assume a salvage value of $45,000. If your tax rate is 35 percent and your discount rate is 10 percent, compute the EAC for both machines. Which do you prefer? Why