Xiaoxiao cut two large and small circles, the area ratio of the large and small circles is 25:9, and the circumference of the small circle is equal to the circumference of the large circle.
笑笑剪了大小两个圆，大小圆面积比是25：9，小圆周长是大圆周长的多少．
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">1 / (5/3)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>