On a map with a scale of (1/60000000), the distance between A and B is 2.5 centimeters. An airplane departs from A to B at 8:00 a.m. and arrives at 9:30 a.m. How many miles per hour?
在比例尺为(1/60000000)的地图上，量得甲、乙两地距离为2.5厘米，一架飞机上午8时从甲地开往乙地，上午9时30分到达，这架飞机平均每小时飞行多少千米？
<gadget id="calculator">1 / 60_000_000</gadget>
<output>1/60_000_000 = around 0</output>

<gadget id="calculator">2.5 / (1/60_000_000) / 100_000 / 1.5</gadget>
<output>1_000</output>

<result>1_000</result>