Xiao Ming bought 5 table tennis rackets and paid 100 yuan, and the salesperson retrieved him 15 yuan. Please do the math for him, how much is each racket.
小明买了5只乒乓球拍，付出100元，营业员找回他15元．请你帮他算一算，每只球拍多少元．
<result>15</result>