I'm stuck and need some quick help.

Waylander Coatings Company purchased waterproofing equipment on January 6 for $488,400. The equipment was expected to have a useful life of four years, or 6,400 operating hours, and a residual value of $40,400. The equipment was used for 2,400 hours during Year 1, 2,000 hours in Year 2, 1,200 hours in Year 3, and 800 hours in Year 4. Required: 1. Determine the amount of depreciation expense for the years ended December 31, Year 1, Year 2, Year 3, and Year 4, by (a) the straightline method, (b) the unitsofactivity method, and (c) the doubledecliningbalance method. Also determine the total depreciation expense for the four years by each method. Note: Round the answer for each year to the nearest whole dollar. Depreciation Expense Year Straight-Line Method Units-of-Activity Method Double-Declining-Balance Method Year1 $m ~l $- J $- vl Year2 $- ~l $- J $- J Year3 $m V $l:l _ '/ Yea... $- $:] x $:] x Total $_ $:]