During the "June 1st" period, the children's book counter of Xinhua Bookstore held the activity of "buy 3 (books) and get 1 (books) free". Xiao Ming bought back 16 science fiction books of the same price and paid a total of 60 yuan. How much is the original price of this science fiction book?
"六一"期间，新华书店的儿童读物柜台举行"买3(本)赠1(本)"活动．小明买回了16本同样价钱的科幻书，共付60元．这种科幻书原价每本多少元．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">16 * (3/4)</gadget>
<output>12</output>

<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<result>5</result>