When Xiaochun calculated the subtraction, he wrote the subtrahend 72 as 27, and the resulting difference was 176. What should be the correct difference?
小春在计算减法时，把减数72写成27，得到的差是176，正确的差应该是多少．
<gadget id="calculator">27 - 72</gadget>
<output>-45</output>

<gadget id="calculator">176 + (-45)</gadget>
<output>131</output>

<result>131</result>