Cut a rectangular piece of paper with a length of 12cm and a width of 8cm and cut out a largest square. What is the area of the remaining part in cm**2.
把一个长12cm，宽8cm的长方形纸片剪下一个最大的正方形，剩下部分的面积是多少cm**2．
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>