There are 8 people participating in a table tennis match, and every two players will play one game. How many games will there be in total?
有8个人参加一次乒乓球比赛，每两个人之间都要比赛一场，一共要赛多少场？
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">8 * (7/2)</gadget>
<output>28</output>

<result>28</result>