There are 103 people in our school participating in interest group activities, including 15 people in the violin group, 2.4 times as many people in the art group as the violin group, and the rest are in the sports group. How many people are there in the sports group?
我们学校参加兴趣小组活动的共有103人，其中小提琴组有15人，美术组的人数是小提琴组的2.4倍，其余的是体育组，体育组有多少人？
<gadget id="calculator">15 * 2.4</gadget>
<output>36</output>

<gadget id="calculator">103 - 15 - 36</gadget>
<output>52</output>

<result>52</result>