The school organizes tree planting activities and divides the students into 18 groups. A total of 567 lessons are to be planted. How many trees are planted in each group on average?
学校组织植树活动，把学生分成18个小组，一共要植567课，平均每组植多少棵树？
<gadget id="calculator">567 / 18</gadget>
<output>63/2 = around 31.5</output>

<result>63/2 = around 31.5</result>