There are 8 students in the table tennis team playing a game. If each student plays a game, how many games will there be in total?
乒乓球队8名同学进行比赛，如果每名同学之间进行一场比赛，一共要比赛多少场．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<result>28</result>