The distance between A and B is 380 kilometers. A car has traveled 140 kilometers from A to B. How many hours will it take to travel 60 kilometers per hour for the rest of the journey?
甲、乙两地相距380千米，一辆汽车从甲地开往乙地，已经行了140千米．剩下的路程每小时行60千米，还要行几小时？
<gadget id="calculator">380 - 140</gadget>
<output>240</output>

<gadget id="calculator">240 / 60</gadget>
<output>4</output>

<result>4</result>