The distance between A and B is about 1200 kilometers. On a map with a scale of 1:50000000, what is the length in centimeters?
甲、乙两地相距大约是1200千米，在比例尺1：50000000的地图上，长是多少厘米．
<gadget id="calculator">1 / 50_000_000</gadget>
<output>1/50_000_000 = around 0</output>

<gadget id="calculator">1_200 * 100_000 * (1/50_000_000)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>