The circumference of a circular pool is 25.12 meters, what is the area occupied by the pool?
一个圆形水池的周长是25.12米，这个水池的占地面积是多少？
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<result>50.24</result>