How many centimeters should a runway with a length of 100m be drawn on a map with a scale of 1:2000?
把长100m的跑道画在比例尺为1：2000的地图上应画多少cm．
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">100 * 100 * (1/2_000)</gadget>
<output>5</output>

<result>5</result>