The tractor factory produced 850 large tractors in the first three months of this year. According to this calculation, how many units can the annual output reach? (Answer with the same ratio method)
拖拉机厂今年前3个月生产大型拖拉机850台．照这样计算，全年产量可以达到多少台？(同比例方法解答)
<gadget id="calculator">850 / 3</gadget>
<output>850/3 = around 283.333333</output>

<gadget id="calculator">(850/3) * 12</gadget>
<output>3_400</output>

<result>3_400</result>