There are 200 fruit trees in an orchard, of which 60 are apple trees and the rest are all pear trees. There are 28 rows of pear trees. On average, how many pear trees are there in each row?
某果园里共有200棵果树，其中苹果树有60棵，其余的全是梨树．梨树共有28行，平均每行有多少棵梨树？
<gadget id="calculator">200 - 60</gadget>
<output>140</output>

<gadget id="calculator">140 / 28</gadget>
<output>5</output>

<result>5</result>