A garment factory received the task of producing 1,200 shirts, and completed 360 of them in the first 3 days. At this speed, how many days will it take to complete this batch of tasks?
某服装厂接到生产1200件衬衫的任务，前3天完成了360件，照这样的速度，完成这批任务一共需要多少天？
<gadget id="calculator">360 / 3</gadget>
<output>120</output>

<gadget id="calculator">1_200 / 120</gadget>
<output>10</output>

<result>10</result>