There are 84 willow trees on campus, 26 more than peach trees, and three times as many apple trees as peach trees. How many apple trees are there on campus?
校园里有柳树84棵，比桃数多26棵，苹果树的棵树是桃树的3倍，校园里有苹果树多少棵？
<gadget id="calculator">84 - 26</gadget>
<output>58</output>

<gadget id="calculator">58 * 3</gadget>
<output>174</output>

<result>174</result>