How many centimeters should a road of 500 kilometers be drawn on a map with a scale of 1:2000000?
500千米的公路，画在比例尺1：2000000的地图上，应画多少厘米．
<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">500 * 100_000 * (1/2_000_000)</gadget>
<output>25</output>

<result>25</result>