The radius of circle A is (1/3) that of circle B, so how many times is the circumference of circle B equal to the circumference of circle A?
甲圆半径是乙圆的(1/3)，那么，乙圆周长是甲圆周长的多少倍？
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

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

<gadget id="calculator">2 / (2/3)</gadget>
<output>3</output>

<result>3</result>