New birth Coatings Company purchased waterproofing equipment on January 2, 2011, for $784, 800. The equipment was expected to have a useful life of four years, or 9, 600 operating hours, and a residual value of $64, 800. The equipment was used for 3, 600 hours during 2011, 3,000 hours in 2012, 1, 700 hours in 2013, and 1, 300 hours in 2014. Required: Determine the amount of depreciation expense for the years ended December 31, 2011, 2012, 2013, and 2014, by (a) the straight-line method, (b) the units-of-output method, and (c) the double-declining-balance method. Also determine the total depreciation expense for the four years by each method