The distance between A and B is 12 cm measured on a map with a scale of 1:500000. If this distance is drawn on a map with a scale of 1:2000000, how many centimeters should be drawn?
在比例尺是1：500000的地图上量得甲、乙两地的距离是12厘米，如果将这段距离画在比例尺1：2000000的地图上，应画多少厘米？
<gadget id="calculator">1 / 500_000</gadget>
<output>1/500_000 = around 0.000002</output>

<gadget id="calculator">12 / (1/500_000)</gadget>
<output>6_000_000</output>

<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">6_000_000 * (1/2_000_000)</gadget>
<output>3</output>

<result>3</result>