The distance between A and B is 15 kilometers. On a map with a scale of 1:500000, how many centimeters is the distance between A and B?
甲乙两地相距15千米，在比例尺是1：500000的地图上，量的甲乙之间的距离是多少厘米．
<gadget id="calculator">1 / 500_000</gadget>
<output>1/500_000 = around 0.000002</output>

<gadget id="calculator">15 * 100_000 * (1/500_000)</gadget>
<output>3</output>

<result>3</result>