There are 108 literature and art books in the school library, and 65 science and technology books are 15 times less than literature and art books. How many science and technology books are there?
学校图书室有文艺书108本，科技书的本数比文艺书的15倍少65本，科技书有多少本？
<gadget id="calculator">108 * 15</gadget>
<output>1_620</output>

<gadget id="calculator">1_620 - 65</gadget>
<output>1_555</output>

<result>1_555</result>