Why is division in Ruby returning an integer instead of decimal value?

Question

For example: 9 / 5 #=> 1but I expected `1.8`. How can I get the correct decimal (non-integer) result? Why is it returning `1` at all?

Answer 1

In Ruby, if both numbers are integers, integer division is performed. To get floating point division, cast one of the numbers to a float like this:

9 / 5.0

or if you have variables:

x.to_f / y