The distance between A and B is 560 kilometers. A train travels 240 kilometers from A to B in 3 hours. At this speed, how many hours will it take for the train to complete the journey?
甲、乙两城相距560千米，一列火车从甲城开往乙城，3小时行了240千米，照这样的速度，这列火车行完全程需几小时？
<gadget id="calculator">240 / 3</gadget>
<output>80</output>

<gadget id="calculator">560 / 80</gadget>
<output>7</output>

<result>7</result>