Build a path around a circular flower bed. The width of the path is 1 meter. The perimeter of the flower bed is 125.6 meters. What is the area of the path in square meters?
在一圆形花坛的周围修一小路，小路宽1米，花坛的周长是125.6米，这条小路的面积是多少平方米？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">125.6 / 6.28</gadget>
<output>20</output>

<gadget id="calculator">20 + 1</gadget>
<output>21</output>

<gadget id="calculator">21 ** 2</gadget>
<output>441</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">441 - 400</gadget>
<output>41</output>

<gadget id="calculator">3.14 * 41</gadget>
<output>128.74</output>

<result>128.74</result>