Dongfeng Tractor Factory produced 2,100 tractors in the first half of the year, which is 50 fewer tractors per month than in the second half of the year. How many tractors will it produce per month in the second half of the year?
东风拖拉机厂上半年生产2100台拖拉机，比下半年每月少生产50台，下半年每月生产多少台？
<gadget id="calculator">2_100 / 6</gadget>
<output>350</output>

<gadget id="calculator">350 + 50</gadget>
<output>400</output>

<result>400</result>