On a map with a scale of 1:3,000,000, the distance between cities A and B is 6.6 cm. If it is drawn on a map with a scale of 1:2,000,000, what is the distance in centimeters between the two cities?
在比例尺是1：3000000的地图上，量得甲、乙两个城市间的距离是6.6厘米，如果画在比例尺是1：2000000的地图上，那么两个城市的图上距离是多少厘米？
<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_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">19_800_000 * (1/2_000_000)</gadget>
<output>99/10 = around 9.9</output>

<result>99/10 = around 9.9</result>