In the Chinese chess competition, a total of 9 players participated in the competition. If there is a match between every 2 players, how many games will be played in total?
在中国象棋比赛中，一共有9名运动员参加比赛．如果每2名运动员之间都要进行一场比赛，一共要进行多少场比赛？
<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">8 * (9/2)</gadget>
<output>36</output>

<result>36</result>