The diameter of the small circle is 4 cm and the diameter of the large circle is 5 cm. What is the circumference of the large circle to the circumference of the small circle.
小圆直径是4厘米，大圆直径是5厘米．大圆周长是小圆周长的多少．
<gadget id="calculator">3.14 * 5</gadget>
<output>15.7</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">15.7 / 12.56</gadget>
<output>1.25</output>

<result>1.25</result>