on jan 1st 2017, Ship X transportation company purchased a used aircraft at the cost of 54,000,000. shipex expects seaplane plane to remain useful for five years (7,300,000 milees) and to have a residual value of 4,000,000. shipex expects to fly the plane 875,000 miles the first year, 1,650,000 each year during the second, third and fourth and 1,475,000 the last year. compute shipex's depriciation for the first two years using the straight line method, the units of production method and the double declining balance method.