The fourth grade students organized tree planting activities on Arbor Day. There are 45 people in the first class and 43 people in the second class. On average, each person plants 3 saplings. How many trees can they plant in total?
四年级同学组织植树节栽树活动．一班有45人，二班有43人，平均每人栽3棵树苗，他们一共能栽多少棵树？
<gadget id="calculator">45 + 43</gadget>
<output>88</output>

<gadget id="calculator">3 * 88</gadget>
<output>264</output>

<result>264</result>