The school's playground is a 200-meter runway with a width of 1 meter and a total of 6 runways. For fair competition, the starting point of the 200-meter race should be how many meters ahead of the first track in the second track.
学校的运动场是200米的跑道，跑道宽1米，共有6个跑道．为公平竞赛，200米跑的起跑点，第二道应比第一道提前多少米．
<result>6.28</result>