The circular flower bed in the garden in the middle of the street has a diameter of 20 meters, and (3/5) of the flower beds are chrysanthemums. What is the area for planting chrysanthemums?
街心花园中圆形花坛直径20米，花坛中有(3/5)种的是菊花．种菊花的面积是多少？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

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

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">314 * (3/5)</gadget>
<output>942/5 = around 188.4</output>

<result>942/5 = around 188.4</result>