The distance between A and B is 247.5 kilometers. A car starts from A and travels an average of 45 kilometers per hour. How long does it take to reach B?
甲、乙两地距离247.5千米，一辆汽车从甲地出发，平均每小时行45千米，需要多长时间才能到达乙地？
<gadget id="calculator">247.5 / 45</gadget>
<output>5.5</output>

<result>5.5</result>