The school organizes tree planting labor, with an average of 18 trees planted per person. There are 56 students in class one and 53 students in class two. How many trees are planted in total in the two classes?
学校组织植树劳动，平均每人植树18棵．一班有学生56人，二班有学生53人，两个班一共植树多少棵？
<gadget id="calculator">56 + 53</gadget>
<output>109</output>

<gadget id="calculator">109 * 18</gadget>
<output>1_962</output>

<result>1_962</result>