At least one of the numbers needs to be a float. Here's an example of
script/console output:

Loading development environment (Rails 2.1.1)
>> 3/2
=> 1
>> 3.0/2
=> 1.5
>> 3/2.0
=> 1.5
>> 3.0/2.0
=> 1.5

In Ruby, division of integers returns only the integer part of the result.

Craig

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