There are 3 rows of trees planted on both sides of the boulevard, and there are 144 trees in total. How many trees are planted in each row on average?
林荫道两旁各栽3行树，一共有144棵，平均每行栽了多少棵树？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">144 / 6</gadget>
<output>24</output>

<result>24</result>