Books in the bookstore can get a 20% discount with the discount card. Xiao Ming bought a set of books with the discount card and saved 9.6 yuan. How much was the original price of the set of books?
书店的图书凭优惠卡可打八折，小明用优惠卡买了一套书，省了9.6元，这套书原价多少钱？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">9.6 / (1/5)</gadget>
<output>48</output>

<result>48</result>