The distance between A and B is 960 kilometers. A car travels 320 kilometers from A to B in 4 hours. At this speed, how many hours will it take to reach B?
甲、乙两地相距960千米，一辆汽车从甲地到乙地，4小时行驶了320千米，照这样的速度，再用多少小时就能到达乙地？
<gadget id="calculator">960 - 320</gadget>
<output>640</output>

<gadget id="calculator">320 / 4</gadget>
<output>80</output>

<gadget id="calculator">640 / 80</gadget>
<output>8</output>

<result>8</result>