On a map with a scale of 1:4,000,000, the measured distance from Beijing to Shanghai is about 27.5 centimeters. How many kilometers is the actual distance from Beijing to Shanghai?
在一幅比例尺为1：4000000的地图上，量得北京到上海的距离大约是27.5厘米，北京到上海实际距离大约是多少千米？
<gadget id="calculator">1 / 4_000_000</gadget>
<output>1/4_000_000 = around 0</output>

<gadget id="calculator">27.5 / (1/4_000_000) / 100_000</gadget>
<output>1_100</output>

<result>1_100</result>