On a map with a scale of 1:6000000, the distance from Nanjing to Beijing is 15 centimeters. If the distance from Nanjing to Beijing is drawn on a map with a scale of 1:5,000,000, how many centimeters should it be drawn?
在比例尺是1：6000000的地图上，量得南京到北京的距离是15厘米．如果把南京到北京的距离画在比例尺是1：5000000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">15 / (1/6_000_000)</gadget>
<output>90_000_000</output>

<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">90_000_000 * (1/5_000_000)</gadget>
<output>18</output>

<result>18</result>