be careful when you use the div method


puts 24.div 2
puts (25.0).div(2.0)

1.	get acquainted with math operations in Ruby
2.	Using Math Operators
3.	A few of Ruby's assignment operators
4.	Some of the operators have assignment shortcuts
5.	unary operators, + and -, which indicate negative and positive numbers
6.	methods such as div, modulo, divmod, quo, and remainder.
7.	Division and Truncation
8.	Abbreviated Assignment Operators
9.	note Ruby does not have ++

be careful when you use the div method : Math Operators « Language Basics « Ruby