The students participated in the interest groups, the music group had 25 people, and the number of the art group was three times that of the music group. How many more people are there in the art group than in the music group?
同学们参加兴趣小组，音乐组25人，美术组的人数是音乐组的3倍．美术组的人数比音乐组多多少人？
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">75 - 25</gadget>
<output>50</output>

<result>50</result>