On a map with a scale of 1:60000000, the distance between AB and AB is 8cm. A plane flies from A to B at 1:00 p.m. and arrives at 5:00 p.m. How much does the plane fly on average per hour?
在比例尺是1：60000000的地图上，量得AB两地的距离是8cm，一架飞机下午一点钟从A地飞往B地，下午五点到达．这架飞机平均每小时飞行多少．
<gadget id="calculator">1 / 60_000_000</gadget>
<output>1/60_000_000 = around 0</output>

<gadget id="calculator">8 / (1/60_000_000) / 100_000 / 4</gadget>
<output>1_200</output>

<result>1_200</result>