circular flower bed with a circumference of 62.8 meters is widened by 1 meter, referred to as a new flower bed, and the area of the new flower bed is increased by how many square meters compared with the original one. (π takes 3.14)
在一个周长为62.8米的圆形花坛的周围加宽1米，简称一个新花坛，这个新花坛的面积比原来增加了多少平方米．(π取3.14)
<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">11 ** 2</gadget>
<output>121</output>

<gadget id="calculator">3.14 * 121</gadget>
<output>379.94</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">379.94 - 314</gadget>
<output>65.94</output>

<result>65.94</result>