There are 90 people participating in the group gymnastics performance of the school sports meeting, divided into 5 squares, and each square stands in 3 rows. How many people stand in each row?
学校运动会团体操表演有90人参加表演，共分5个方阵，每个方阵站3行．每行站多少人？
<gadget id="calculator">90 / 5 / 3</gadget>
<output>6</output>

<result>6</result>