The garment factory processed a batch of garments, and processed 180 sets in the first 3 days. According to this calculation, the task can be completed in another 15 days. How many sets of this batch of garments are there?
服装厂加工一批服装，前3天加工了180套，照这样计算，再用15天就能完成任务，这批服装共有多少套？
<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 * 15</gadget>
<output>900</output>

<gadget id="calculator">180 + 900</gadget>
<output>1_080</output>

<result>1_080</result>