In a mathematics competition, the average score of team A is 78 points, the average score of team B is 72 points, and the average score of all the students in the two teams is 73.5 points. It is also known that team B has 6 more people than team A, so how many people are there in team B? people.
一次数学竞赛中，甲队的平均分是78分，乙队的平均分是72分，两队全体同学的平均分是73.5分，又知乙队比甲队多6人，那么乙队有多少人．
<gadget id="calculator">73.5 * 6</gadget>
<output>441</output>

<gadget id="calculator">72 * 6</gadget>
<output>432</output>

<gadget id="calculator">441 - 432</gadget>
<output>9</output>

<gadget id="calculator">72 - 73.5 - 73.5</gadget>
<output>-75</output>

<gadget id="calculator">78 + (-75)</gadget>
<output>3</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">3 + 6</gadget>
<output>9</output>

<result>9</result>