Gоrdоn Drilling Cо. purchаses а driller for $14,000. Its mаrket value for salvage purposes decreases 30% each year. When installed on an oil field, the machinery operates virtually all day, and operating and maintenance costs will be $3,500 the first year, increasing $600 each year thereafter. The MARR is 15%. What is the EUAC associated with the Optimal Replacement Interval? Note that your answer should be a positive dollar amount and not the optimal replacement interval.