The distance between A and B is 600 kilometers. Xiaoshang starts from A and travels 120 kilometers in 3 hours. How many hours will it take to reach B at the same speed?
甲乙两地相距600千米，小尚从甲地出发，3小时行120千米，如果同样的速度还需几小时才到达乙地？
<gadget id="calculator">600 - 120</gadget>
<output>480</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<gadget id="calculator">480 / 40</gadget>
<output>12</output>

<result>12</result>