The circumference of the bottom of the oil storage tank in the refinery is 37.68 meters, how many square meters is the bottom of it?
炼油厂的储油桶底面周长是37.68米，它的底面是多少平方米？
<gadget id="calculator">37.68 / 3.14 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<result>113.04</result>