The actual distance between two places is 12 kilometers, how many centimeters is it on a map with a scale of 1:2,00,000
实际距离是12千米的两地，在一幅比例尺是1：2,00,000的地图上是多少厘米
<gadget id="calculator">1 / 200_000</gadget>
<output>1/200_000 = around 0.000005</output>

<gadget id="calculator">12 * 100_000 * (1/200_000)</gadget>
<output>6</output>

<result>6</result>