The circumference of a circular fountain is 62.8 meters, and a flower garden with a width of 2 meters is built around the pool. Plant flowers and plants in the flowerbed. Flowers and plants cost 85 yuan per square meter. How much does it cost to green this flower garden?
在一个圆形喷水池的周长是62.8米，绕着这个水池修一条宽2米的花圃．在花圃中种植花草．每平方米的花草是85元，绿化这个花圃要多少元？
<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 ** 2</gadget>
<output>144</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">144 - 100</gadget>
<output>44</output>

<gadget id="calculator">3.14 * 44</gadget>
<output>138.16</output>

<gadget id="calculator">138.16 * 85</gadget>
<output>11_743.6</output>

<result>11_743.6</result>