Two people A and B are running on a circular track. It is known that A is faster than B. If they start at the same place at the same time and run in the same direction, they can meet for the first time after 3 minutes and 20 seconds; if they run in the opposite direction , then it is possible to meet for the first time after 40 seconds. It is known that A runs at a speed of 6 meters per second. How many meters is the diameter of this circular runway? (Pi is taken as 3)
甲、乙二人在圆形跑道上跑步，已知甲的速度比乙快，如果二人在同一地方同时出发，同向跑，则经过3分20秒可以第一次相遇；若反向跑，则经过40秒也可以第一次相遇，已知甲跑步的速度每秒跑6米，这个圆形跑道的直径有多少米？(圆周率取3)
<gadget id="calculator">200 * 6</gadget>
<output>1_200</output>

<gadget id="calculator">6 * 40</gadget>
<output>240</output>

<gadget id="calculator">1_200 - 240</gadget>
<output>960</output>

<gadget id="calculator">40 + 200</gadget>
<output>240</output>

<gadget id="calculator">960 / 240</gadget>
<output>4</output>

<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<gadget id="calculator">40 / 3</gadget>
<output>40/3 = around 13.333333</output>

<gadget id="calculator">10 * (40/3)</gadget>
<output>400/3 = around 133.333333</output>

<result>400/3 = around 133.333333</result>