There are 340 peach trees in the orchard, and the number of pear trees is 30 less than three times the number of peach trees. How many pear trees are there in the orchard?
果园里有桃树340棵，梨树的棵数比桃树的3倍少30棵，果园里有梨树多少棵？
<gadget id="calculator">340 * 3</gadget>
<output>1_020</output>

<gadget id="calculator">1_020 - 30</gadget>
<output>990</output>

<result>990</result>