A train travels 540 kilometers from 8:20 am to 2:20 pm. How many kilometers per hour does the train travel on average?
一辆列车从上午8时20分开出，到下午2时20分一共行了540千米，这辆列车平均每小时行多少千米？
<gadget id="calculator">540 / 6</gadget>
<output>90</output>

<result>90</result>