There are 525 students from Huaxin Primary School participating in the summer camp activities. The activities are divided into 5 teams, and each team is divided into 7 groups. How many students participate in the activities on average in each group?
华新小学有525名同学参加夏令营活动，活动分成5队，每队又分成7组，平均每组有多少名同学参加活动？
<gadget id="calculator">525 / 5 / 7</gadget>
<output>15</output>

<result>15</result>