On a map with a scale of 1:3000000, the distance between A and B is 12 cm; if on a map with a scale of 1:2500000, how many centimeters should be the distance between A and B?
在比例尺是1：3000000的地图上，量得甲、乙两地相距12厘米；如果在比例尺是1：2500000的地图上，量得甲、乙两地应该相距多少厘米．
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">12 / (1/3_000_000)</gadget>
<output>36_000_000</output>

<gadget id="calculator">1 / 2_500_000</gadget>
<output>1/2_500_000 = around 0</output>

<gadget id="calculator">36_000_000 * (1/2_500_000)</gadget>
<output>72/5 = around 14.4</output>

<result>72/5 = around 14.4</result>