There is a circular flower bed in the park, its diameter is 16 meters, but there is a circular pool in the middle of the flower bed. The radius of the pool is 5 meters. What is the area of this flower bed in square meters?
公园里有一个环形花坛，它的直径是16米，但花坛中间有一个圆形的水池．水池的半径是5米．这个花坛的面积是多少平方米？
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

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

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

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">200.96 - 78.5</gadget>
<output>122.46</output>

<result>122.46</result>