The scale of a map is 1:8000000, and the distance of 2cm on the map represents the actual distance in km.
一副地图比例尺为1：8000000，在地图上2cm的距离表示实际距离为多少km．
<gadget id="calculator">1 / 8_000_000</gadget>
<output>1/8_000_000 = around 0</output>

<gadget id="calculator">2 / (1/8_000_000) / 100_000</gadget>
<output>160</output>

<result>160</result>