In the 100-meter race, Li Ming took 12.8 seconds, Wang Jun took 14.6 seconds, and Wang Qiang took 13.59 seconds. Who ran the fastest? How many seconds faster is the fastest than the slowest?
百米赛跑，李明用了12.8秒，王军用了14.6秒，王强用了13.59秒，谁跑得最快？最快的比最慢的快多少秒？
<gadget id="calculator">14.6 - 12.8</gadget>
<output>1.8</output>

<result>1.8</result>