The actual distance between A and B is 40 kilometers. On a map with a scale of 1:2,000,000, what is the distance in centimeters between A and B on the map?
甲乙两地之间的实际距离是40千米，在比例尺是1：2000000的地图上，甲乙两地之间的图上距离是多少厘米？
<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">40 * 100_000 * (1/2_000_000)</gadget>
<output>2</output>

<result>2</result>