The garment factory plans to produce 1,200 sets of garments, and has already produced 480 sets. The rest will take 4 days to complete. How many sets will be produced on average every day to complete the task?
服装厂计划生产1200套服装，已经生产了480套．余下的需要4天完成．以后平均每天生产多少套才能完成任务？
<gadget id="calculator">1_200 - 480</gadget>
<output>720</output>

<gadget id="calculator">720 / 4</gadget>
<output>180</output>

<result>180</result>