There are 42 pear trees in the orchard, and 9 times as many peach trees as pear trees. How many more peach trees are there than pear trees?
果园里有梨树42棵，桃树的棵树是梨树的9倍，桃树比梨树多多少棵？
<gadget id="calculator">42 * 9</gadget>
<output>378</output>

<gadget id="calculator">378 - 42</gadget>
<output>336</output>

<result>336</result>