On a map, 5 centimeters means 15 kilometers. The actual distance between A and B is 22.5 kilometers. How many centimeters is the distance on the map?
在一副地图上5厘米表示15千米甲乙两地的实际距离是22.5千米，图上距离是多少厘米？
<gadget id="calculator">1 / 300_000</gadget>
<output>1/300_000 = around 0.000003</output>

<gadget id="calculator">2_250_000 * (1/300_000)</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>