The distance between A and B is 5.4 kilometers. How many centimeters should be drawn on a map with a scale of 1:30000?
甲乙两地相距5.4千米，画在一幅比例尺是1：30000的地图上，应画多少厘米．
<gadget id="calculator">1 / 30_000</gadget>
<output>1/30_000 = around 0.000033</output>

<gadget id="calculator">5.4 * 100_000 * (1/30_000)</gadget>
<output>18</output>

<result>18</result>