Arbor Day is here. 25 students from each of the 6 classes of the fourth grade participated in the tree planting activity. A total of 600 trees were planted. How many trees are planted per person on average?
植树节到了，四年级6个班各派25名同学参加植树活动，共植树600棵，平均每人植树多少棵？
<gadget id="calculator">25 * 6</gadget>
<output>150</output>

<gadget id="calculator">600 / 150</gadget>
<output>4</output>

<result>4</result>