The ratio of pear trees to peach trees in the orchard is 3:5. It is known that there are 40 fewer pear trees than peach trees. How many fruit trees are there in this orchard?
果园里梨树与桃树的比是3：5，已知梨树比桃树少40棵，这个果园共有果树多少棵？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">20 * 8</gadget>
<output>160</output>

<result>160</result>