On a map with a scale of 1:6000000, the distance between A and B is 8.5 cm. What is the actual distance between A and B in km?
在比例尺是1：6000000的地图上，量得甲、乙两地间的距离是8.5cm，甲、乙两地间的实际距离是多少km．
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">8.5 / (1/6_000_000) / 100_000</gadget>
<output>510</output>

<result>510</result>