The total length of the railway from Nanjing to Wuhan is 1,750 kilometers, and it takes 7 hours for a train to reach Wuhan from Nanjing. What is the average speed of this train in km/h?
南京到武汉的铁路全长1750千米，一列动车7小时从南京到达武汉．这列动车的平均速度是多少千米/小时？
<gadget id="calculator">1_750 / 7</gadget>
<output>250</output>

<result>250</result>