A car travels a total of 400 kilometers from 7:20 am to 5:20 pm, how many kilometers does the car travel per hour?
一辆汽车从上午7：20到下午5：20时，共行驶400千米，这辆汽车每小时行驶多少千米？
<gadget id="calculator">400 / 10</gadget>
<output>40</output>

<result>40</result>