Uncle Tian has a 188.4-meter-long iron wire, and plans to wrap it around a circular bullpen three times. How many square meters does this bullpen occupy? (π takes an approximate value of 3.14)
田叔叔有188.4米长的铁丝，计划把它绕一个圆形的牛栏3圈．这个牛栏占地多少平方米？(π取近似值3.14)
<gadget id="calculator">188.4 / 3</gadget>
<output>62.8</output>

<gadget id="calculator">62.8 / 2 / 3.14</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>