There are 48 students in Class 1 of the fifth grade, and a total of 99 trees are planted. There are 42 students in Class 2 of the fifth grade, and a total of 126 trees are planted. How many trees are planted by each person in these two classes?
五年级1班有学生48人，共植树99棵，五年级2班有学生42人，共植树126棵，这两班平均每人植树多少棵？
<gadget id="calculator">99 + 126</gadget>
<output>225</output>

<gadget id="calculator">48 + 42</gadget>
<output>90</output>

<gadget id="calculator">225 / 90</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>