There are 108 peach trees in the orchard, and there are 9 fewer pear trees than peach trees. How many trees are there in total?
果园里有桃树108棵，梨树比桃树的3倍少9棵．两种树共多少棵？
<gadget id="calculator">108 * 3</gadget>
<output>324</output>

<gadget id="calculator">324 - 9</gadget>
<output>315</output>

<gadget id="calculator">315 + 108</gadget>
<output>423</output>

<result>423</result>