When doing a subtraction problem, Xiao Ming regards the 7 in the ones place of the subtrahend as 9, and the 5 in the tens place as 3. The result difference is 26. What is the correct answer?
做一道减法题时，小明把减数的个位上的7看作9，十位上的5看作3，结果差是26，正确的答案应是多少．
<gadget id="calculator">26 + 39</gadget>
<output>65</output>

<gadget id="calculator">65 - 57</gadget>
<output>8</output>

<result>8</result>