If the distance between AB and AB is 20cm measured on a map with a scale of (1/1000000), what is the actual distance between AB and AB in km?
在一幅比例尺是(1/1000000)的地图上量得AB两地距离是20cm，则AB两地的实际距离是多少km．
<gadget id="calculator">1 / 1_000_000</gadget>
<output>1/1_000_000 = around 0.000001</output>

<gadget id="calculator">20 / (1/1_000_000) / 100_000</gadget>
<output>200</output>

<result>200</result>