There are 6 athletes running a 400-meter race on a standard 400-meter track. It is known that the radius of the innermost curve is 36 meters, and the width of each track is 1.2 meters. How many meters should the starting point of each track be advanced in sequence.
有6名运动员在标准的400米跑道上进行400米赛跑，已知最内圈弯道的半径是36米，每条跑道的宽是1.2米，每条跑道的起点应依次提前多少米．
<gadget id="calculator">1.2 * 2</gadget>
<output>2.4</output>

<gadget id="calculator">3.14 * 2.4</gadget>
<output>7.536</output>

<result>7.536</result>