Brown Office Supplies recently reported $$6700$ of sales, $$8,250$ of operating costs other than depreciation, and $$1,750$ of depreciation. It had $$9,000$ of bonds outstanding that carry a $7\mathrm{.}0\%$ interest rate, and its federal$-$plus$-$state income tax rate was $21\%.$ The firm's earnings before taxes $($taxable income$)($EBT$)$ is $$\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$