The distance between A and B is 285 kilometers. A car departs from A at 9 am and arrives in B at 2 pm. What is the speed of this car?
甲乙两城相距285千米，一辆汽车上午9时从甲城出发，下午2时到达乙城．这辆汽车的速度是多少？
<gadget id="calculator">285 / 5</gadget>
<output>57</output>

<result>57</result>