It takes half an hour for a car to go from point A to point B. According to this calculation, how much can the whole journey be done in 20 minutes?
一辆汽车从甲地到乙地用了半小时，照这样计算，20分钟可行全程的多少
<gadget id="calculator">20 / 30</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>