Two road repair teams jointly build a road. Team A repairs 45 meters per day, and Team B repairs 35 meters per day. It has been repaired for 8 days. How many meters have they repaired in total?
两支修路队合修一条公路，甲队每天修45米，乙队每天修35米，已经修了8天，一共修了多少米？
<gadget id="calculator">45 + 35</gadget>
<output>80</output>

<gadget id="calculator">80 * 8</gadget>
<output>640</output>

<result>640</result>