In 2003, the Chinese team in the football world has 4 teams in the group, and every 2 teams play a game. How many games are played in total?
2003年足球世界中国队，所在的小组共有4支球队，每2支球队进行一场比赛，一共进行多少场．
<gadget id="calculator">4 - 1</gadget>
<output>3</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>