The scale of a map is 1:10000. From this map, the distance between AB and AB is 2 cm. What is the actual distance between AB and AB in kilometers?
一幅地图的比例尺是1：10000，从这幅地图上量得AB两地的距离是2厘米，则AB两地的实际距离是多少千米．
<gadget id="calculator">2 / 100_000</gadget>
<output>1/50_000 = around 0.00002</output>

<gadget id="calculator">10_000 * (1/50_000)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>