Two engineering teams, A and B, are working together on a 160-kilometer railway. They are working simultaneously from both ends. Team A repairs 1,400 meters per week, and Team B repairs 1,800 meters per week. How many weeks will it take to complete this railway?
甲乙两个工程队同修一条长160公里的铁路，它们从两端同时施工，甲队每星期修1400米，乙队每星期修1800米，修完这条铁路需要几个星期？
<gadget id="calculator">1_400 + 1_800</gadget>
<output>3_200</output>

<gadget id="calculator">3_200 / 1_000</gadget>
<output>16/5 = around 3.2</output>

<gadget id="calculator">160 / (16/5)</gadget>
<output>50</output>

<result>50</result>