If a circle with the largest area is cut out of a square cardboard with a side length of 6 decimeters, what is the area of the remaining part of the cardboard?
在一个边长为6分米的正方形纸板中剪掉一个面积最大的圆，这块纸板剩下部分的面积是多少平方分米？
<gadget id="calculator">6 * 6</gadget>
<output>36</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">36 - 28.26</gadget>
<output>7.74</output>

<result>7.74</result>