In a 400-meter race on a 400-meter oval track, if the track width is 1.5 meters, how many meters should the starting line be advanced in sequence?
在400m的椭圆形跑道中进行400米赛跑，如果道宽为1.5m，起跑线该依次提前多少米？
<gadget id="calculator">3.14 * 1.5 * 2</gadget>
<output>9.42</output>

<result>9.42</result>