On a map with a scale of 1:3,000,000, the distance from Lishui to Shanghai is 16.2 centimeters. How many kilometers is the actual distance from Lishui to Shanghai?
在一幅比例尺是1：3000000的地图上，量得丽水到上海的距离是16.2厘米，丽水到上海的实际距离是多少千米？
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">16.2 / (1/3_000_000) / 100_000</gadget>
<output>486</output>

<result>486</result>