When Xiaogang was doing the calculation problem, due to his carelessness, he regarded the 8 in the ones place of an addend as 3, and the 6 in the tens place as 9, and the result was 85. What is the correct sum?
小刚做计算题时，由于粗心大意，把一个加数个位上的8看成了3，把十位上的6看成了9，结果所得的和是85，正确的和是多少．
<gadget id="calculator">5 - 30</gadget>
<output>-25</output>

<gadget id="calculator">85 + (-25)</gadget>
<output>60</output>

<result>60</result>