Three people want to inflate their cars. If it takes 2 minutes to inflate a bicycle, 5 minutes to inflate a tricycle, and 4 minutes to inflate a motorcycle. Now there is only one inflator. In order to make the total waiting time The shortest, how should the sequence of cheering be arranged? What was the total time they waited?
三个人要给自己的车充气，如果给一辆自行车充气需要2分钟，给一辆三轮车充气需要5分钟，给一辆摩托车充气需要4分钟，现在只有一个充气筒，为了使等候的总时间最短，应怎样安排打气的顺序？他们等候的总时间是多少？
<gadget id="calculator">2 + 4</gadget>
<output>6</output>

<gadget id="calculator">2 + 4 + 5</gadget>
<output>11</output>

<gadget id="calculator">2 + 6 + 11</gadget>
<output>19</output>

<result>19</result>