On a map with a scale of 1:5000000, the measured distance between A and B is 12cm. How many kilometers is the actual distance between A and B?
在比例尺是1：5000000的地图上，量得甲、乙两地的距离是12cm，甲、乙两地的实际距离是多少千米？
<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</gadget>
<output>600</output>

<result>600</result>