A car traveled a total of 280 kilometers from 8:30 am to 4:30 pm. What is the average speed of this car?
一辆汽车从上午8时30分到下午4时30分共行了280千米，这辆汽车的平均速度是多少？
<gadget id="calculator">280 / 8</gadget>
<output>35</output>

<result>35</result>