Students from grade 6 of Huafeng Primary School participated in the rope skipping competition. There are 5 classes in each grade, and a total of 690 people participated in the competition. How many people participate in each class on average?
华风小学6个年级的同学参加跳绳比赛．每个年级有5个班，一共690人参加比赛，平均每班有多少人参加？
<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">690 / 30</gadget>
<output>23</output>

<result>23</result>