On a map with a scale of 1:5000000, the distance between City A and City B is measured to be 9 cm. How much should be drawn on another picture with a scale of 1:3000000?
在一幅比例尺是1：5000000的图上，量得甲城到乙城的距离是9厘米．画在另一幅比例尺为1：3000000的图上，应画多少？
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">9 / (1/5_000_000)</gadget>
<output>45_000_000</output>

<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">45_000_000 * (1/3_000_000)</gadget>
<output>15</output>

<result>15</result>