To build a circular path with a width of 2 meters around a circular flowerbed with a diameter of 18 meters, what is the area of the circular path?
要在一个直径是18米的圆形花圃的四周修一条宽2米的环形小路，环形小路的面积是多少？
<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 + 2</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">9 ** 2</gadget>
<output>81</output>

<gadget id="calculator">3.14 * 81</gadget>
<output>254.34</output>

<gadget id="calculator">379.94 - 254.34</gadget>
<output>125.6</output>

<result>125.6</result>