On a map with a scale of 1:300,000, the distance between A and B is 6 cm. On another map with a scale of 1:200,000, what is the distance between the two places on the map?
在一幅比例尺是1：300000的地图上，量得甲乙两地的距离是6厘米，在另一幅比例尺是1：200000的地图上，两地之间的图上距离是多少？
<gadget id="calculator">1 / 300_000</gadget>
<output>1/300_000 = around 0.000003</output>

<gadget id="calculator">6 / (1/300_000)</gadget>
<output>1_800_000</output>

<gadget id="calculator">1 / 200_000</gadget>
<output>1/200_000 = around 0.000005</output>

<gadget id="calculator">1_800_000 * (1/200_000)</gadget>
<output>9</output>

<result>9</result>