The garment factory plans to make 670 sets of clothes. It has been done for 4.5 days, an average of 82 sets per day, and the rest will be completed in 3.5 days. How many sets are made per day on average?
服装厂计划做670套衣服，已经做了4.5天，平均每天做82套，剩下的要在3.5天完成，平均每天做多少套？
<gadget id="calculator">670 - 369</gadget>
<output>301</output>

<gadget id="calculator">301 / 3.5</gadget>
<output>86</output>

<result>86</result>