There are two circles, A and B. The diameter of circle A is 6 cm, and the radius of circle B is 2 cm. How many times is the circumference of circle A equal to the circumference of circle B?
有甲乙两个圆，甲圆直径是6厘米，乙圆半径是2厘米，甲圆周长是乙圆周长的几倍？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>