Rao Construction recently reported $$28\mathrm{.}00$ million of sales, $$12\mathrm{.}60$ million of operating costs other than depreciation, and $$3\mathrm{.}00$ million of depreciation. It had $$8\mathrm{.}50$ million of bonds outstanding that carry a $7\mathrm{.}0\%$ interest rate, and its federal$-$plus$-$state income tax rate was $25\%.$ What was Rao's operating income, in millions?