The school organized tree planting activities on Arbor Day. The second grade students planted 30 trees into 5 rows on average. How many trees were planted in each row?
植树节学校组织栽树活动，二年级同学把30棵树平均栽成了5行，每行栽了几棵树？
<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<result>6</result>