The circumference of the large circle and the small circle are 18.84 cm and 12.56 cm respectively, and the diameter of the small circle is the diameter of the large circle
大圆和小圆的周长分别为18.84厘米和12.56厘米，小圆的直径是大圆直径的多少
<gadget id="calculator">12.56 / 3.14</gadget>
<output>4</output>

<gadget id="calculator">18.84 / 3.14</gadget>
<output>6</output>

<gadget id="calculator">4 / 6</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>