On a map, the actual distance of 800 kilometers is represented by a line segment of 1 cm. What is the scale of this map?
在一幅地图上，用1厘米线段表示800千米实际距离，这幅地图比例尺是多少
<gadget id="calculator">800 * 100_000</gadget>
<output>80_000_000</output>

<gadget id="calculator">1 / 80_000_000</gadget>
<output>1/80_000_000 = around 0</output>

<result>1/80_000_000 = around 0</result>