A train departs from Tianjin at 13:30 and arrives in Jinan at 17:30, traveling a total of 360 kilometers. How many kilometers per hour does the train travel on average?
一列火车13时30分从天津出发，17时30分到达济南，共行驶了360千米，这列火车平均每小时行多少千米？
<gadget id="calculator">360 / 4</gadget>
<output>90</output>

<result>90</result>