There are 270 pear trees in the orchard, and 140 more apple trees than pear trees. How many pear trees and apple trees are there altogether?
果园里有梨树270棵，苹果树比梨树多140棵，梨树和苹果树一共有多少棵？
<gadget id="calculator">270 + 140 + 270</gadget>
<output>680</output>

<result>680</result>