The radius of the small circle is 3.14 decimeters, and the diameter of the large circle is 12.56 decimeters. What is the area of the small circle compared to the large circle?
小圆的半径是3.14分米，大圆的直径是12.56分米，小圆的面积是大圆的多少
<gadget id="calculator">3.14 * 3.14</gadget>
<output>9.8596</output>

<gadget id="calculator">6.28 * 6.28</gadget>
<output>39.4384</output>

<gadget id="calculator">9.8596 / 39.4384</gadget>
<output>0.25</output>

<result>0.25</result>