The scale of a map is 1:800,000, that is, the actual distance in kilometers represented by a 1cm line segment on the map.
一幅地图的比例尺是1：800,000，也就是图上1cm的线段表实际距离多少千米．
<gadget id="calculator">800_000 / 100_000</gadget>
<output>8</output>

<result>8</result>