In a 400-meter running race, if the diameter of the first semicircular track is 72.6 meters and each track is 1.25 meters wide, how far should the starting point of the first track and the second track be from each other to reflect the fairness of the game?
在400米的跑步比赛中，如果第一条半圆形跑道直径为72.6米，每条跑道宽1.25米，那么第一跑道和第二跑道起点应相差多远，才能体现比赛的公平？
<gadget id="calculator">72.6 / 2</gadget>
<output>36.3</output>

<gadget id="calculator">36.3 + 1.25</gadget>
<output>37.55</output>

<gadget id="calculator">3.14 * 37.55 * 2</gadget>
<output>235.814</output>

<gadget id="calculator">3.14 * 72.6</gadget>
<output>227.964</output>

<gadget id="calculator">235.814 - 227.964</gadget>
<output>7.85</output>

<result>7.85</result>