The diameter of the small circle is (3/8) the diameter of the large circle, and the circumference of the large circle is 25.12dm. What is the area of the small circle in square decimeters?
小圆的直径是大圆直径的(3/8)，大圆的周长是25.12dm．小圆的面积是多少平方分米？
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">4 * (3/8)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3.14 * (9/4)</gadget>
<output>7.065</output>

<result>7.065</result>