On a map with a scale of 1:1000000, if the length of a certain road is 2 cm, what is the actual distance of this road in kilometers?
在一张比例为1：1000000的地图上，如果量出某一段路的长度是2厘米，那么这段路的实际距离是多少千米．
<gadget id="calculator">1 / 1_000_000</gadget>
<output>1/1_000_000 = around 0.000001</output>

<gadget id="calculator">2 / (1/1_000_000) / 100_000</gadget>
<output>20</output>

<result>20</result>