The school holds a table tennis match. There are 6 players in total. Every two players play one game. How many games will be played in total?
学校举行乒乓球比赛，共有6人，每两人打一场，一共要打多少场．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">6 * (5/2)</gadget>
<output>15</output>

<result>15</result>