The school bought 480 literature and art books, less than story books (1/5). How many literary books and story books did you buy?
学校买来480本文艺书，比故事书少(1/5)．文艺书和故事书共买了几本？
<gadget id="calculator">1 / 5</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">480 / (4/5)</gadget>
<output>600</output>

<gadget id="calculator">600 + 480</gadget>
<output>1_080</output>

<result>1_080</result>