On a map with a scale of (1/6000000), the length of the railway between A and B is 6.2 cm. If a train leaves from A at a speed of 120 kilometers per hour, how many hours will it take to reach B?
在比例尺是(1/6000000)的地图上，量得甲、乙两地铁路长6.2厘米，如果一列火车以每小时120千米的速度从甲地开出，几小时可到达乙地？
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">6.2 / (1/6_000_000) / 100_000 / 120</gadget>
<output>3.1</output>

<result>3.1</result>