Four students, A, B, C, and D, participate in a Go match. Each of them has to play a game with 3 other students. How many games will they play in total?
甲、乙、丙、丁四个同学参加围棋赛，每个人都要和另外3个人各比赛一盘，他们一共要赛几盘？
<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>