The distance between A and B is 6 cm on a map with a scale of 1:6,000,000. If you draw him on a map with a scale of 1:9,000,000, how many centimeters should you draw?
甲地到乙地画在一幅比例尺是1：6000000的地图上是6厘米，如果把他画在一幅比例尺是1：9000000的地图上，应该画多少厘米？
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">6 / (1/6_000_000)</gadget>
<output>36_000_000</output>

<gadget id="calculator">1 / 9_000_000</gadget>
<output>1/9_000_000 = around 0</output>

<gadget id="calculator">36_000_000 * (1/9_000_000)</gadget>
<output>4</output>

<result>4</result>