On a map with a scale of 1:4000000, the distance between the two places is 3.6 cm. What is the actual distance in kilometers between A and B?
在比例尺是1：4000000的地图上，量得两地的距离3.6厘米，甲、乙两地的实际距离是多少千米？
<gadget id="calculator">1 / 4_000_000</gadget>
<output>1/4_000_000 = around 0</output>

<gadget id="calculator">3.6 / (1/4_000_000) / 100_000</gadget>
<output>144</output>

<result>144</result>