How many different team formation plans are there to choose one person from each of the three boys, Xiaowen, Xiaoming, and Xiaogang, and the three girls, Xiaohong, Xiaohua, and Xiaoli, to participate in a mixed doubles match?
要从3名男生小文、小明、小刚和3名女生小红、小华、小莉中各选派一人参加混合双打比赛，一共有多少种不同的组队方案．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>