The railway from Tianjin to Jinan is 360 kilometers long. The train departs from Tianjin at 7:00 am and arrives at Jinan at 11:00 am. How many kilometers per hour does the train travel on average?
天津到济南的铁路长360千米．火车上午7：00从天津发车，上午11：00到达济南．火车平均每小时行多少千米．
<gadget id="calculator">360 / 4</gadget>
<output>90</output>

<result>90</result>