There are 360 peach trees in the orchard. The number of peach trees is (2/3) the number of pear trees, and the number of apple trees is (7/9) that of pear trees. How many apple trees are there?
果园里有桃树360棵，桃树的棵数是梨树棵数的(2/3)，苹果树的棵数是梨树的(7/9)，苹果树有多少棵？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">540 * (7/9)</gadget>
<output>420</output>

<result>420</result>