On a map with a scale of 1:5000000, the distance between A and B is 5 cm. So what is the actual distance in kilometers between A and B?
在一幅比例尺是1：5000000的地图上，量得甲乙两地的距离是5厘米．那么甲乙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">5 / (1/5_000_000) / 100_000</gadget>
<output>250</output>

<result>250</result>