On a map with a scale of 1:4000000, the distance on the map between A and B is 6 cm. If a car travels from city A to city B at a speed of 60 kilometers per hour, how long will it take to get there?
在比例尺1：4000000的地图上，量得这甲乙两城的图上距离是6厘米．如果一辆汽车以每小时60千米的速度从甲城到乙城，几小时可以到达？
<gadget id="calculator">1 / 4_000_000</gadget>
<output>1/4_000_000 = around 0</output>

<gadget id="calculator">6 / (1/4_000_000) / 100_000 / 60</gadget>
<output>4</output>

<result>4</result>