The production situation of the bicycle factory in the first quarter is as follows: 4,300 bicycles were produced in January, 3,900 bicycles were produced in February, and 4,400 bicycles were produced in March.
自行车厂第一季度的生产情况如下：一月份生产4300辆，二月份生产3900辆，三月份生产4400辆，平均每月生产多少辆．
<gadget id="calculator">4_300 + 3_900 + 4_400</gadget>
<output>12_600</output>

<gadget id="calculator">12_600 / 3</gadget>
<output>4_200</output>

<result>4_200</result>