The results of a survey by a communications research organization revealed that roughly 20% of adult women believe that a romantic relationship over the Internet while in an exclusive relationship in the real world is cheating. What are the odds against randomly selecting an adult female Internet user who believes that having a "cyber affair" is cheating?
The odds, in the most simplified form, are $\boxed{ }$ to $\boxed{ }$ against randomly selecting an adult female Internet user who believes that having a "cyber affair" is cheating.
(Type whole numbers.)