The actual distance from Yongsheng to Kunming is about 460 kilometers. If the scale is 1:20000000, what is the distance from Yongsheng to Kunming on the map?
永胜到昆明的实际距离大约是460千米，如果按1：20000000的比例尺，永胜到昆明的图上距离是多少？
<gadget id="calculator">1 / 20_000_000</gadget>
<output>1/20_000_000 = around 0</output>

<gadget id="calculator">460 * 100_000 * (1/20_000_000)</gadget>
<output>23/10 = around 2.3</output>

<result>23/10 = around 2.3</result>