A new batch of books purchased by the school is divided into two bookshelves. Book A holds (3/8) of these books, and Book B holds 80 more books than Book A. How many books are there in this batch?
学校新购进一批图书分放在两个书架上，甲书架放这批图书的(3/8)，乙书架比甲书架多放80本，这批图书有多少本？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">80 / (1/4)</gadget>
<output>320</output>

<result>320</result>