There are 125 apple trees planted in an orchard, and the number of pear trees is 20 less than four times that of apple trees. How many trees are planted in this orchard?
一个果园里栽了125棵苹果树，梨树的棵数比苹果树的4倍少20棵．这个果园一共栽了多少棵树？
<gadget id="calculator">125 * 4</gadget>
<output>500</output>

<gadget id="calculator">500 - 20</gadget>
<output>480</output>

<gadget id="calculator">480 + 125</gadget>
<output>605</output>

<result>605</result>