On a map with a scale of (1/600000), the distance between A and B is 25 cm. At 9:30 am, a plane flies from A to B and arrives at 10:10 am. How many kilometers per hour does the plane fly?
在比例尺是(1/600000)的地图上，量得甲乙两地的距离为25厘米，上午9点30分，有一架飞机从甲地飞往乙地，上午10点10分到达．问这架飞机每小时飞行多少千米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">150 / (2/3)</gadget>
<output>225</output>

<result>225</result>