Two classes in the fifth grade participated in the tree planting activity. There were 37 students in the first class, and 132 trees were planted; 35 students in the second class, 120 trees were planted. How many trees were planted by each fifth grader?
五年级两个班参加植树活动，一班37人，植树132棵；二班35人，植树120棵，五年级平均每人植树多少棵？
<gadget id="calculator">132 + 120</gadget>
<output>252</output>

<gadget id="calculator">37 + 35</gadget>
<output>72</output>

<gadget id="calculator">252 / 72</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>