The literature and art books in the school library account for 40% of the total, and recently bought 120 literature and art books, so the number of literature and art books accounts for 48% of the total. How many books does the school have now?
学校图书馆的文艺书占总数的40%，最近又买来120本文艺书，这样文艺书的本数就占总数的48%，学校现在有图书多少本？
<gadget id="calculator">120 - 57.6</gadget>
<output>62.4</output>

<gadget id="calculator">0.48 - 0.4</gadget>
<output>0.08</output>

<gadget id="calculator">62.4 / 0.08</gadget>
<output>780</output>

<result>780</result>