On a map with a scale of 1:1,000,000, which represents a distance of 72 kilometers, how many centimeters should be drawn on the map.
在一幅比例尺为1：1000000的地图上，表示72千米的距离，地图上应画多少厘米．
<gadget id="calculator">1 / 1_000_000</gadget>
<output>1/1_000_000 = around 0.000001</output>

<gadget id="calculator">72 * 100_000 * (1/1_000_000)</gadget>
<output>36/5 = around 7.2</output>

<result>36/5 = around 7.2</result>