The school library buys back five sets of books, each with 12 books, and the total cost is 1128 yuan. How much does each book cost on average?
学校图书馆买回五套丛书，每套12本，共需要1128元．平均每本书要多少元？
<gadget id="calculator">1_128 / 5 / 12</gadget>
<output>94/5 = around 18.8</output>

<result>94/5 = around 18.8</result>