There are 32 teams in the 15th FIFA World Cup divided into 8 groups. Every two teams in each group play a game, and how many games are played in each group.
第十五届世界杯足球赛共有32支球队分成8个小组比赛．每个小组内每两支球队进行一场比赛，每组要进行多少场比赛．
<gadget id="calculator">32 / 8</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<result>6</result>