On January 1,2018 , Foley Airlines purchased a used airplane for \\( \\$ 48,500,000 \\). Foley Airlines expects the plane to remain useful for four years (4,000,000 miles) and to have a residual value of \\( \\$ 4,500,000 \\). The company expects the plane to be flown \\( 1,600,000 \\) miles the first year. Read the requirements. Before calculating the first-year depreciation expense on the plane using the units-of-production method, calculate the depreciation expense per unit. Select the formula, then enter the amounts and calculate the depreciation per unit. nnatin Now, select the formula, enter the amounts, and calculate the company's first-year depreciation expense on the plane using the units-of-production method. Requirement 1c. Compute Foley Airlines's first-year depreciation expense on the plane using the double-declining-balance method. Begin by selecting the formula to calculate the company's first-year depreciation expense on the plane using the double-declining-balance method. Then enter the amounts and calculate the depreciation expense for the first year. (Enter \"0\" for items with a zero value.)