On a 1:200000 map, the distance between A and B is 12 cm. What is the actual distance between A and B in kilometers?
在一幅1：200000的地图上量得甲乙两地相距12厘米，甲乙两地的实际距离是多少千米．
<gadget id="calculator">1 / 200_000</gadget>
<output>1/200_000 = around 0.000005</output>

<gadget id="calculator">12 / (1/200_000) / 100_000</gadget>
<output>24</output>

<result>24</result>