There is a circular fish pond in the park. The circumference of the fish pond is 100.48 meters. There is a circular island with a radius of 6 meters in the middle of the fish pond. What is the water area of this fish pond?
公园里有一个圆形的养鱼池，量得养鱼池的周长是100.48米；养鱼池中间有一个半径是6米的圆形小岛．这个养鱼池的水域面积是多少？
<gadget id="calculator">100.48 / 3.14 / 2</gadget>
<output>16</output>

<gadget id="calculator">16 ** 2</gadget>
<output>256</output>

<gadget id="calculator">3.14 * 256</gadget>
<output>803.84</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">803.84 - 113.04</gadget>
<output>690.8</output>

<result>690.8</result>