The train from Tianjin to Jinan departs at 13:30 and arrives at 17:30. The total length of the railway from Tianjin to Jinan is 360 kilometers. How many kilometers does the train travel on average per hour?
天津到济南的列车从13：30开出，17：30到达，天津到济南的铁路全长360千米，火车平均每时行多少千米？
<gadget id="calculator">360 / 4</gadget>
<output>90</output>

<result>90</result>