Need help with depreciation per concert and depreciation in 2017

On January 2, 2017, the It will use this equipment for four years, during which time It anticipates performing about 200 concerts. It estumates that after four years it can sell the equipment for $2,000. During year 2017, the band performs 45 concerts Band acquires sound equipment for concert performances at a cost of $65,800. The band estimates Compute the year 2017 depr using the units-of-production method 2017 in 2017 45 in 2017