On a map with a scale of 1:60000000, the distance between Xi’an and Beijing is measured as 4.5 centimeters. A plane flies from Xi’an to Beijing at 11:30 am and arrives at 2 pm. How many kilometers does the plane travel per hour?
在比例尺是1：60000000的地图上，量得西安到北京的距4.5厘米，上午11点30分有一架飞机从西安地飞往北京，下午2点到达，这架飞机每小时行多少千米？
<gadget id="calculator">1 / 60_000_000</gadget>
<output>1/60_000_000 = around 0</output>

<gadget id="calculator">4.5 / (1/60_000_000) / 100_000 / 2.5</gadget>
<output>1_080</output>

<result>1_080</result>