The school library has 624 story books and 256 popular science books. These two kinds of books account for 4/5 of the total number of books. How many books are there in the school library?
学校图书馆有故事书624本，有科普读物256本，两种图书占图书总数的(4/5)，学校图书馆共有图书多少本？
<gadget id="calculator">624 + 256</gadget>
<output>880</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">880 / (4/5)</gadget>
<output>1_100</output>

<result>1_100</result>