Cut out the largest circle from a rectangular cardboard with a length of 12 cm and a width of 10 cm. How many square centimeters is the leftover scrap?
在一个长12厘米，宽10厘米的长方形纸板上剪下一个最大的圆．剩下的边角料是多少平方厘米？
<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">120 - 78.5</gadget>
<output>41.5</output>

<result>41.5</result>