On a map with a scale of 1:3,000,000, the length of the road between Luxi and Kunming is 6.6cm. On a map with a scale of 1:2500000, how long is the road between Luxi and Kunming in cm?
在比例尺是1：3000000的地图上，量得泸西到昆明两地之间的公路长6.6cm．在比例尺是1：2500000的地图上，泸西到昆明之间的公路长多少cm．
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">6.6 / (1/3_000_000)</gadget>
<output>19_800_000</output>

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

<gadget id="calculator">19_800_000 * (1/2_500_000)</gadget>
<output>198/25 = around 7.92</output>

<result>198/25 = around 7.92</result>