Lesson 2: Everything is an Object 

$ irb
irb(main):001:0> answer = 42
=> 42
irb(main):002:0> answer.class
=> Fixnum
irb(main):003:0> 42.class
=> Fixnum
irb(main):006:0> answer.class.class
=> Class
irb(main):004:0> answer = answer * 1.3
=> 54.6
irb(main):005:0> answer.class
=> Float