The World Cup group stage is divided into 8 groups, with 4 teams in each group. The competition requirements are: every two teams in the group must play one game. How many games does a team play in total?
世界杯小组赛分了8个小组，每个小组4支球队，比赛要求是：小组内每两个球队必须赛一场．一个小组一共要赛多少场．
<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 * (1/2)</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">4 * (3/2)</gadget>
<output>6</output>

<result>6</result>