The line segment scale of a map is 1:5,000,000. The distance between A and B on this map is 12 cm. If a train travels from A to B at a speed of 120 kilometers per hour, how many hours will it take to arrive?
一幅地图的线段比例尺是1：5000000，甲乙两城在这幅地图上相距12厘米，一辆火车以每小时120千米的速度从甲城开往乙城，需要几小时才能到达？
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">12 / (1/5_000_000) / 100_000 / 120</gadget>
<output>5</output>

<result>5</result>