Just need some help on this. The answers in the white boxes are currently WRONG

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Many thanks and God bless!

S9-5 (similar to) Question Help On February 28, 2017, Lexington Landscaping purchased a copy machine for $53,400. Lexington Landscaping expects the machine to last for six years and to have a residual value of $3,000. Compute depreciation expense on the machine for the year ended December 31, 2017, using the straight-line method. Begin by selecting the formula to calculate the company's depreciation expense on the machine for the year ended December 31, 2017. Then enter the amounts and calculate the depreciation expense. (Abbreviation used: Acc. = accumulated. Do not round intermediary calculations. Only round the amount you input for straight-line depreciation to the nearest dollar.) Straight-line [C Cost Residual Value ): Useful Life 1*( Number of Months = 12 ) = depreciation [( $ 53,400 $ 3,000 ) - 6 ]*( 4 =1 2800 6 Enter any number in the edit fields and then click Check Answer. ? All parts showing Clear All Check