A passenger plane flew from Xiamen to Qingdao at 10:30 in the morning and arrived at Qingdao Airport at 4:30 in the afternoon. It is known that the flight distance from Xiamen to Qingdao is 2,250 kilometers. How many kilometers does this passenger plane fly on average per hour?
一架客机上午10：30从厦门飞往青岛，下午4：30到达青岛机场．已知厦门到青岛的航程有2250千米，问这架客机平均每小时飞行多少千米？
<gadget id="calculator">2_250 / 6</gadget>
<output>375</output>

<result>375</result>