When Xiaoli calculated a number plus 37, she accidentally stained the paper with ink, and there was only one 7 left in 37, so the result was 13. What is the original correct result.
小丽在计算一个数加37时，不小心用墨水弄脏了纸，37只剩下了一个7，这样得到的结果是13．原来正确的结果是多少．
<gadget id="calculator">13 - 7</gadget>
<output>6</output>

<gadget id="calculator">37 + 6</gadget>
<output>43</output>

<result>43</result>