There are 120 science and technology books in the school library, and 20 books are placed in each classroom. How many classrooms can they be distributed to?
学校图书馆有120本科技书，每间教室放20本，可以分给多少间教室．
<gadget id="calculator">120 / 20</gadget>
<output>6</output>

<result>6</result>