A workshop plans to produce 5,200 parts. In the first 12 days, a total of 1,800 parts will be produced. From the thirteenth day onwards, 200 parts can be produced every day. How many days will it take for this workshop to complete the task of these parts?
某车间计划生产零件5200个，前12天共生产零件1800个，从第十三天起，每天能生产零件200个，这个车间完成这批零件的任务共需要多少天？
<gadget id="calculator">5_200 - 1_800</gadget>
<output>3_400</output>

<gadget id="calculator">3_400 / 200</gadget>
<output>17</output>

<gadget id="calculator">17 + 12</gadget>
<output>29</output>

<result>29</result>