Three people go to fetch water, Xiao Wang takes 1 minute, Xiao Ming takes 4 minutes, Xiao Hua takes 5 minutes, how to arrange to minimize the sum of waiting time? How many minutes is this time?
三个人去接水，小王用1分钟，小明用4分钟，小华用5分钟，怎样安排使等候时间的总和最少？这个时间是多少分钟？
<gadget id="calculator">1 * 3</gadget>
<output>3</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">3 + 8 + 5</gadget>
<output>16</output>

<result>16</result>