The distance between A and B is 240 kilometers. A car travels from A to B in 4 hours (2/3). If the speed of the car remains the same, how many hours will it take to reach B?
甲乙两城相距240千米，一辆汽车从甲城开往乙城，4小时行了全程的(2/3)，若汽车速度不变，共多少小时可以到达乙城？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 4</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / (1/6)</gadget>
<output>6</output>

<result>6</result>