The distance between A and B is 240 kilometers. A car travels 80 kilometers from A to B in 2 hours. According to this calculation, how many hours will it take to complete the journey?
甲、乙两地相距240千米，一辆汽车从甲地开往乙地，2小时行了80千米，照这样计算，行完全程需要几小时？
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">240 / 40</gadget>
<output>6</output>

<result>6</result>