Two garment groups work together to process a batch of garments. Group A processes 40 sets per day, and Group B processes 42 sets per day. After 5 days of processing, there are still 90 sets left unprocessed. How many sets of this batch of garments are there?
两个服装小组共同加工一批服装，甲组每天加工40套，乙组每天加工42套，加工5天后，还剩下90套没加工，这批服装共有多少套？
<gadget id="calculator">40 + 42</gadget>
<output>82</output>

<gadget id="calculator">82 * 5</gadget>
<output>410</output>

<gadget id="calculator">410 + 90</gadget>
<output>500</output>

<result>500</result>