On a map with a scale of 1:5,000,000, the distance between Ganzhou and Nanchang is measured to be 8 centimeters. How many kilometers is the actual distance between these two places?
在一幅比例尺是1：5000000的地图上，量得赣州与南昌的距离是8厘米，这两地之间的实际距离大约是多少千米？
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">8 / (1/5_000_000) / 100_000</gadget>
<output>400</output>

<result>400</result>