On a map with a scale of 1:6000000, the distance between the two places is measured to be 15cm, so what is the actual distance in kilometers between the two places?
在一幅比例尺是1：6000000的地图上，量得两地距离是15cm，那么，这两地的实际距离是多少千米．
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">15 / (1/6_000_000) / 100_000</gadget>
<output>900</output>

<result>900</result>