A passenger plane flew from Xiamen to Qingdao at 11:30 in the morning and arrived at Qingdao Airport at 2:30 in the afternoon. It is known that the voyage from Xiamen to Qingdao is 2250 kilometers. How many kilometers per hour does this airliner fly on average?
一架客机上午11：30从厦门飞往青岛，下午2：30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 / 3</gadget>
<output>750</output>

<result>750</result>