Reader Inc purchased a machine costing $80,000 on January 3rd. The machine is expected to last 10 years and 10,000 hours with a salvage value of $4,000. During the first year the machine was used 1,800 hours. What is annual depreciation if Reader uses the units of production method?

		$7,600
		$8,000
		$13,680
		$13,500