The fifth grade students participated in the tree planting activity. There were 39 students in the first class and 65 trees in total; 40 students in the second class and 68 trees in total; 41 students in the third class and 62 trees in total. How many trees are planted by each person in the whole grade?
五年级同学参加植树活动，一班39人，共植树65棵；二班40人，共植树68棵；三班41人，共植树62棵．全级平均每人植树多少棵？
<gadget id="calculator">65 + 68 + 62</gadget>
<output>195</output>

<gadget id="calculator">39 + 40 + 41</gadget>
<output>120</output>

<gadget id="calculator">195 / 120</gadget>
<output>13/8 = around 1.625</output>

<result>13/8 = around 1.625</result>