Three children are playing military chess, each of them played 3 games, how many games did they play in total?
三个小朋友在下军棋，每两个人之间都下了3盘，一共下了多少盘？
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">2 * 3 * (3/2)</gadget>
<output>9</output>

<result>9</result>