When Xiaoqiao was doing addition calculations, she mistook the 0 in the ones digit of an addend as a 6, and the 2 in the tens digit as a 5. The sum obtained in this way was 156. What is the correct answer?
小巧在做加法计算时，错把一个加数个位上的0看成了6，把十位上的2看成了5，这样得到的和是156，正确的答案是多少？
<gadget id="calculator">156 - 56</gadget>
<output>100</output>

<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<result>120</result>