On a map with a scale of (1/200000), a line segment 0.5 cm long represents the actual distance in kilometers.
在比例尺是(1/200000)的地图上，0.5厘米长的线段表示实际距离是多少千米．
<gadget id="calculator">1 / 200_000</gadget>
<output>1/200_000 = around 0.000005</output>

<gadget id="calculator">0.5 / (1/200_000)</gadget>
<output>100_000</output>

<gadget id="calculator">100_000 / 100_000</gadget>
<output>1</output>

<result>1</result>