The distance between A and B is about 150km. On a map with a scale of 1:3000000, what is the distance between the two places in centimeters?
甲乙两地相距大约150km，在一幅比例尺是1：3000000的地图上，两地之间的距离应是多少厘米．
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">150 * 100_000 * (1/3_000_000)</gadget>
<output>5</output>

<result>5</result>