The distance between A and B is 180 kilometers, how many centimeters should be drawn on a map with a scale of 1:3000000.
甲乙两地相距180千米，在比例尺是1：3000000的地图上应画出多少厘米．
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">180 * 100_000 * (1/3_000_000)</gadget>
<output>6</output>

<result>6</result>