On January 2, 2018, the Matthews Band acquires sound equipment for concert performances at a cost of $66,400. The band estimates it will use this equipment for four years, during which time it anticipates performing about 200 concerts. It estimates that after four years it can sell the equipment for $1,000. During year 2018, the band performs 45 concerts.
Compute the year 2018 depreciation using the units-of-production method.