102 apple trees are planted in the orchard, and 8 rows of pear trees are also planted. There are 198 apple trees and pear trees in total. On average, how many pear trees are there in each row?
果园里栽了102棵苹果树，还栽了8行梨树，苹果树和梨树一共有198棵．平均每行梨树有多少棵．
<gadget id="calculator">198 - 102</gadget>
<output>96</output>

<gadget id="calculator">96 / 8</gadget>
<output>12</output>

<result>12</result>