A student team is advancing on the street at a speed of 3 kilometers per hour, and a cyclist is heading towards the student team at a speed of 15 kilometers per hour. It takes him 2 minutes to go from the head to the tail of the team. The leader of the team?
一学生队伍在大街上以每小时3千米的速度前进，一个骑自行车的人以每小时15千米的速度向学生队伍迎面而来，他从队头到队尾用去2分钟，求学生队伍的长？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">25 / 6</gadget>
<output>25/6 = around 4.166667</output>

<gadget id="calculator">(5/6) + (25/6)</gadget>
<output>5</output>

<gadget id="calculator">5 * 2 * 60</gadget>
<output>600</output>

<result>600</result>