If a piece of paper with a length of 8 cm and a width of 6 cm is cut off the largest circle, what is the remaining area in square centimeters?
把一张长8厘米，宽6厘米的纸，剪去一个最大的圆后，剩下的面积是多少平方厘米．
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">48 - 28.26</gadget>
<output>19.74</output>

<result>19.74</result>