Ding Ding needs 3 minutes to get a haircut, Lili needs 5 minutes to get a haircut, and Hong Hong needs 6 minutes to get a haircut.
丁丁理发需要3分钟，丽丽理发需要5分钟，红红理发需要6分钟，这三人理发及等候所用的总时间最少是多少分钟．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<gadget id="calculator">9 + 10 + 6</gadget>
<output>25</output>

<result>25</result>