The circumference of a circular fountain is 62.8m, how many square meters does this fountain occupy?
一个圆形喷水池的周长是62.8m，这个喷水池的占地面积是多少平方米？
<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<result>314</result>