Conok Company has a fiscal year ending on Dec 31 each year. The company purchased (on April 1, 2015) equipment with a total cost of $500,000, estimated useful life of 10 years, and estimated salvage value of $70,000. On Jan 1, 2017, the company automated the equipment at a cost of $200,000 to facilitate 24 hours operations. This doubled production of the asset but the useful life was decreased by 4 years. Prepare a depreciation table (like the one shown below) to calculate the depreciation expense and the accumulated depreciation each year using the double declining balance method.

Year	Beginning Net Book Value	DEPRECIATION RATE (%)	DEPRECIATION EXPENSE	ACCUMULATED DEPRECIATION	ENDING NET BOOK VALUE
2015	$500,000	20%	$100,000	$75,000	$425,000
2016	$425,000	20%	85000		$540,000
2017	$540,000	47.06%	$254,118	$414,118	$285,882
2018	$285,882	47.06%	$134,533	$548,651	$151,349
2019	$151,349	47.06%	$71,223	$619,874	$80,126
2020	$80,126	47.06%	$37,706	$657,580	$42,420
2021	$42,420	11.76%	$4,991	$662,571	$37,429

I'm not sure how to calculate the salvage value into my table.