On a map with a scale of 1:5000000, the measured distance between the two places is 8 cm. What is the actual distance in kilometers between the two places?
在比例尺1：5000000的地图上，量得两地的距离是8厘米，两地的实际距离是多少千米．
<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>