There are 120 pear trees in the orchard, the number of peach trees is 5/6 of that of pear trees, and the number of apple trees is less than that of peach trees (2/5). How many fewer apple trees are there than peach trees?
果园里有120棵梨树，桃树棵数是梨树的(5/6)，苹果树棵数比桃树少(2/5)，苹果树比桃树少多少棵？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 * (5/6) * (2/5)</gadget>
<output>40</output>

<result>40</result>