On a map with a scale of 1:2000000, the distance between A and B on the map is 12cm, so what is the actual distance in kilometers between A and B?
在比例尺为1：2000000的地图上，A、B两地的图上距离是12cm，那么A、B两地的实际距离是多少千米．
<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">12 / (1/2_000_000) / 100_000</gadget>
<output>240</output>

<result>240</result>