When the little sloppy was calculating an addition problem, he mistakenly regarded the addend 37 as 73, and the calculation result was 373. What should be the correct calculation result.
小马虎在计算一道加法题时，错把加数37看成了73，计算的结果是373．正确的计算结果应该是多少．
<gadget id="calculator">373 - 73</gadget>
<output>300</output>

<gadget id="calculator">300 + 37</gadget>
<output>337</output>

<result>337</result>