# Ring of fractions of $\mathbb Z_6$

I am studying commutative algebra and I have a problem in calculating the fraction rings. For example, it would be a great help someone help me to calculate the ring of fraction if $$S= \{1,3,5\}$$ is a multiplicative subset of $$R=\mathbb{Z}_6$$.

I know the definition of the ring of fractions, but I can not calculate it. Thanks for any help.