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Legacy issues $$670,000$ of $6\mathrm{.}0\%,$ four$-$year bonds dated January $1,2021,$ that pay interest semiannually on June $30$ and December $31.$ They are issued at $$624,896$ when the market rate is $8\%.$

$2.$ Determine the total bond interest expense to be recognized over the bonds' life.

Total bond interest expense over life of bonds: