On June 8, the 2008 European Football Championship began. A total of 16 national teams participated, divided into 4 groups on average. According to the regulations, each group first conducts a round robin match (that is, each team in the group has to compete with the other 3 teams). The top two teams in each group will enter the knockout round (that is, one team will be eliminated in each game). In this way, when the champion team is produced, how many games have been played in this European Cup.
6月8日，2008年欧洲足球锦标赛开始了．共有16个国家的代表队参加，平均分成4个小组．按规定，每个小组先进行循环赛(即小组里的每支队都要和其他3支队分别比赛一场)．每个小组获得积分前两名的队伍进入淘汰赛(即每比赛一场要淘汰一支队)，这样，当冠军队伍产生后，本届欧洲杯一共进行了多少场比赛．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">4 * (3/2) * 4</gadget>
<output>24</output>

<gadget id="calculator">4 + 2 + 1</gadget>
<output>7</output>

<gadget id="calculator">24 + 7</gadget>
<output>31</output>

<result>31</result>