Two teams build a road with a length of 3,200 meters at the same time. Team A builds 75 meters per day, and Team B builds 85 meters per day. How many days will it take to complete the road?
两队同时修一条长为3200米的公路，甲队每天修75米，乙队每天修85米，修完这条公路需要几天？
<gadget id="calculator">75 + 85</gadget>
<output>160</output>

<gadget id="calculator">3_200 / 160</gadget>
<output>20</output>

<result>20</result>