When Xiaohu calculated the formula 399+(3417-口)/17, he did not notice the brackets, so the calculated result was 3737, so what should be the correct result of this formula.
小虎在计算算式399+(3417-口)/17时，由于没有注意到括号，所以计算出来的结果是3737，那么这个算式的正确结果应该是多少．
<gadget id="calculator">3_417 - 1_343</gadget>
<output>2_074</output>

<gadget id="calculator">2_074 / 17</gadget>
<output>122</output>

<gadget id="calculator">399 + 122</gadget>
<output>521</output>

<result>521</result>