The garment factory has to process 670 sets of school uniforms. It has been processed for 5 days, with an average of 80 sets processed per day, and the rest must be completed and handed over to the school within 3 days. How many sets do the rest have to process at least every day?
服装厂要加工670套校服，已经加工了5天，平均每天加工80套，剩下的要在3天内完成交学校．剩下的平均每天至少要加工多少套？
<gadget id="calculator">80 * 5</gadget>
<output>400</output>

<gadget id="calculator">670 - 400</gadget>
<output>270</output>

<gadget id="calculator">270 / 3</gadget>
<output>90</output>

<result>90</result>