In the orchard, the number of apple trees is three times that of peach trees. The managers can spray pesticides on 25 apple trees and 15 peach trees every day. No spray. How many trees are there in the orchard?
果园里，苹果树的棵树是桃树的3倍，管理人员每天能给25棵苹果树和15棵桃树喷洒农药，几天后当给桃树喷完农药时，苹果树还有140棵没有喷药．果园里这两种树共多少棵？
<gadget id="calculator">15 * 3</gadget>
<output>45</output>

<gadget id="calculator">45 - 25</gadget>
<output>20</output>

<gadget id="calculator">140 / 20</gadget>
<output>7</output>

<gadget id="calculator">15 * 7</gadget>
<output>105</output>

<gadget id="calculator">25 * 7</gadget>
<output>175</output>

<gadget id="calculator">105 + 175 + 140</gadget>
<output>420</output>

<result>420</result>