The ground circumference of a circular flower bed is 12.56 meters, and a 2-meter-wide path is built around the flower bed, so how many square meters is the area of the path?
一个圆形花坛的地面周长为12.56米，在花坛周围修一条2米宽的小路，那么小路的面积多少平方米？
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">50.24 - 12.56</gadget>
<output>37.68</output>

<result>37.68</result>