Our school has 1,200 literature and art books, and the number of science and technology books is 20% less than that of literature and art books. How many science books does the school have?
我们学校有文艺书1200本，科技书的本数比文艺书少20%．学校有科技书多少本？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_200 * (4/5)</gadget>
<output>960</output>

<result>960</result>