Orange Corp. constructed a machine at a total cost of $$52$

million. Construction was completed at the end of $2014$ and the

machine was placed in service at the beginning of $2015.$ The machine

was being depreciated over a $7-$year life using the

sum$-$of$-$the$-$years'$-$digits method. The residual value is expected to

be $$3$ million. At the beginning of $2018,$ Orange decided to change

to the straight$-$line method. Ignoring income taxes, what will be

Orange's depreciation expense for $2018?($Do not round

your intermediate calculation and round final answer to $1$ decimal

place.$)$multiple choice$$8\mathrm{.}1$ million.$$7\mathrm{.}0$ million.$$5\mathrm{.}1$ million.$$4\mathrm{.}4$ million.