There are 52 peach trees in the orchard, and there are 6 rows of pear trees, and there are 20 more pear trees than peach trees. How many pear trees are there on average in each row?
果园里有52棵桃树，有6行梨树，梨树比桃树多20棵．平均每行梨树有多少棵？
<gadget id="calculator">52 + 20</gadget>
<output>72</output>

<gadget id="calculator">72 / 6</gadget>
<output>12</output>

<result>12</result>