division.irb

irb(main):007:0> 0 / 0
ZeroDivisionError: divided by 0
	from (irb):7:in `/'
	from (irb):7
	from :0

irb(main):006:0> 0.0 / 0
=> NaN

irb(main):014:0> 0.0 == 0
=> true
irb(main):015:0> 0.0 === 0
=> true


irb(main):008:0> 1 / 0
ZeroDivisionError: divided by 0
	from (irb):8:in `/'
	from (irb):8
	from :0

irb(main):009:0> 1.0 / 0
=> Infinity

irb(main):012:0> 1 / 3
=> 0

irb(main):013:0> 1.0 / 3
=> 0.333333333333333