The children's clothing factory has to process a batch of school uniforms. It has been processing for 9 days, with an average of 208 sets per day, and another 620 sets to complete the task. How many sets of this batch of school uniforms are there?
儿童服装厂要加工一批校服，已经加工了9天，平均每天加工208套，还要再加工620套就完成任务，这批校服共有多少套？
<gadget id="calculator">208 * 9</gadget>
<output>1_872</output>

<gadget id="calculator">1_872 + 620</gadget>
<output>2_492</output>

<result>2_492</result>