Outside a circular flower bed with a diameter of 16 meters, a circular path with a width of 1 meter surrounds it. What is the area of this path?
在直径为16米的圆形花坛外面，环绕着一条宽1米的环形小路，这条小路的面积的多少？
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

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

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

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

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

<gadget id="calculator">254.34 - 200.96</gadget>
<output>53.38</output>

<result>53.38</result>