Orono Corp.$\text{'}$s sales last year were $$435,000,$ its operating costs were $$362,500,$ and its interest charges were $$12,500.$ What was the firm's times interest earned $($TIE$)$ ratio?

$4\mathrm{.}72$

$4\mathrm{.}97$

$5\mathrm{.}23$

$5\mathrm{.}51$

$5\mathrm{.}80$