8 football teams play a single round robin match. In each match, the winner gets 3 points, the loser gets 0 points, and the draw gets 1 point each. If the total points of team A is 16 points, how many games does team A win at least?
8个足球队进行单循环赛，每场比赛中，胜方得3分，负方得0分，踢平的双方各得1分．如果A队的总积分是16分，那么A队至少有几场战胜对方？
<gadget id="calculator">3 * 7</gadget>
<output>21</output>

<gadget id="calculator">21 - 16</gadget>
<output>5</output>

<result>5</result>