The scale of a line segment on a map is 1:6,000,000. The distance from A to B measured on the map is 25 cm. What is the actual distance in kilometers from A to B?
一幅地图的线段比例尺是1：6000000，地图上量得A地到B地的距离是25厘米，A地到B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">25 / (1/6_000_000) / 100_000</gadget>
<output>1_500</output>

<result>1_500</result>