certain school district held the "Innovation Cup" elementary school football match. There were 6 school football teams. On the school field. On average, how many games do each school arrange?
某学区举行"创新杯"小学生足球赛，共有6所学校的足球队比赛，比赛采取循环制，每个队都要和其他各队赛一场，根据积分排名次，这些比赛分别安排在3个学校的球场上进行．平均每个学校要安排多少场比赛．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">6 / 2 / 3</gadget>
<output>1</output>

<gadget id="calculator">5 * 1</gadget>
<output>5</output>

<result>5</result>