Since computers think in terms of "1" and "0" how do they calculate and represent fractions such as 7.50 ? I know Java and JavaScript and if required for the answer you can use them as an example .
Edit: I was watching this MIT video on hashing by Prof. Cormen at 46:31 seconds he explains the multiplication hash function using a modular wheel which is a unit circle with several points in it and the points denote fractions. This prompted me to ask this basic question here in SO .