The students ride the Ferris wheel in the amusement park, and the ticket price is 3.5 yuan per person. There are 41 people in the first class and 39 people in the second class. If each person sits once, how much will the two classes pay in total?
同学们在游乐园坐摩天轮，每人票价3.5元．一班有41人，二班有39人，如果每人坐一次，两个班一共应付多少钱？
<gadget id="calculator">41 + 39</gadget>
<output>80</output>

<gadget id="calculator">3.5 * 80</gadget>
<output>280</output>

<result>280</result>