Shuangxing Shoes Factory produces a batch of sports shoes, 680 pairs per day. It has been produced for 5 days, and there are still 126 pairs that have not been produced. How many pairs of this batch of sports shoes are there?
双星鞋厂生产一批运动鞋，每天生产680双，已经生产了5天，还有126双没生产，这批运动鞋共有多少双？
<gadget id="calculator">680 * 5</gadget>
<output>3_400</output>

<gadget id="calculator">3_400 + 126</gadget>
<output>3_526</output>

<result>3_526</result>