The library shipped a batch of new books. There were 420 story books, and 12 times as many technology books as story books. How many story books and technology books were shipped in total?
图书馆运来一批新书，故事书有420本，科技书是故事书的12倍，故事书和科技书一共运来多少本？
<gadget id="calculator">420 * 12</gadget>
<output>5_040</output>

<gadget id="calculator">5_040 + 420</gadget>
<output>5_460</output>

<result>5_460</result>