Teacher Li put on makeup for three students who participated in the English drama performance. Xiao Ming needed 4 minutes, Xiao Qiang needed 3 minutes, and Xiao Hong needed 2 minutes. How to arrange to minimize the sum of the waiting time of the three people?
李老师为参加英语剧表演的三个同学化妆，小明需要4分钟，小强需要3分钟，小红需要2分钟．怎样安排才能使三人等候的时间总和最少？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 6 + 4</gadget>
<output>16</output>

<result>16</result>