During the Arbor Day, the school organizes students to plant trees. There are 3 classes in the fourth grade, and each class plants 20 trees. There are 4 classes in the fifth grade. Each class will plant 5 more trees than each class in the fourth grade.
植树节期间学校组织学生植树，四年级有3个班，每班植树20棵，五年级有4个班，每班比四年级每班多植5棵，四五年级共植树多少棵？
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<gadget id="calculator">100 + 60</gadget>
<output>160</output>

<result>160</result>