on january $1$st $2023.$ logan air purhcased a used bombarider aircraft at a cost of $85,000,000.$ logan expects the plane to remian useful for $6$ years $(4,000,000$ miles$)$ and to have a residual value of $4,000,000.$ logan expects the plane to be flown $825,000$ miles the first year and $625,000$ miles in the second year. calculate the second year amortization using straight line method, unit of production method and double declining balance method