The school held the autumn track and field meeting. The three class teachers in the fifth grade counted the number of participants in the competitions as follows: 37 people participated in the track competition, 25 people participated in the field competition, and 10 people participated in both the field competition and the track competition. There were 113 people who did not participate. This confused Teacher Yu! I heard that you are very good at using your brain. Tell the teacher how many students there are in the fifth grade.
学校召开秋季田径运动会，五年级三位班主任统计参加比赛项目的人数如下：参加径赛的有37人，参加田赛的有25人，其中既参加田赛又参加径赛的有10人，田赛径赛都没参加的有113人．这可把余老师搞糊涂了！听说你挺会动脑筋，快告诉老师五年级有多少学生．
<gadget id="calculator">25 - 10</gadget>
<output>15</output>

<gadget id="calculator">37 + 15 + 113</gadget>
<output>165</output>

<result>165</result>