The circumference of a circular piece of paper is 50.24dm, what is its area?
一个圆形纸片的周长是50.24dm，它的面积是多少？
<gadget id="calculator">50.24 / 2 / 3.14</gadget>
<output>8</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64</gadget>
<output>200.96</output>

<result>200.96</result>