A circular flower bed is 125.6 meters long along the edge of the flower bed. How many square meters does this flower bed occupy?
一个圆形花坛，沿花坛边走一圈是125.6米，这个花坛占地多少平方米？
<gadget id="calculator">125.6 / 3.14 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">3.14 * 400</gadget>
<output>1_256</output>

<result>1_256</result>