To draw a circle with a diameter of 3 cm, what is the distance between the two legs of the compass in cm?
要画直径3厘米的圆，圆规两脚之间的距离就是多少厘米．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

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