please solve it asap thanks

Southeast Airlines purchased an aircraft on January 1, 2014, at a cost of $36,000,000. At time of purchase, the estimated useful life and estimated residual value of the aircraft were 15 years and $3,000,000 respectively. On January 1, 2021 the airline estimated that the remaining useful life of the aircraft to be 10 years and the residual value to be $1,600,000. The Company uses the straight-line method. No depreciation expense had been recorded in 2021. Determine the amount of Depreciation Expense for 2021. Clearly show calculations for numbers that are not given (4 points)