I need help with this pls

(Bonus Question) You purchased $60,000 worth horizontal milling machine in your ongoing project. You expect to save labour costs by $20,000 in year 1, $45,000 in year 2 and $10,000 in year 3. This machine will have different operating hours over three years: 1,200 hours between year 0 (now ) and year 1, 3,500 hours between year 1 and year 2 and 3,000 hours between year 2 and year 3. Using the information above, determine the equivalent savings per machine hour at MARR=8%