On a 1:8,000,000 map, the measured distance between two cities is 27 centimeters. If the plane flies an average of 720 kilometers per hour, how many hours does it take for the plane to fly between these two cities?
在一幅1：8000000的地图上，量的两个城市间的距离是27厘米，如果飞机平均每小时飞行720千米，飞机在这两个城市间大约要飞行多少小时？
<gadget id="calculator">1 / 8_000_000</gadget>
<output>1/8_000_000 = around 0</output>

<gadget id="calculator">27 / (1/8_000_000) / 100_000 / 720</gadget>
<output>3</output>

<result>3</result>