Do the multiplications in the fraction $\frac{1\times 5}{6\times 36}$.
$$sort(\frac{1}{3},\frac{2}{3},\frac{5}{216})$$
Least common denominator of the numbers in the list $\frac{1}{3},\frac{2}{3},\frac{5}{216}$ is $216$. Convert numbers in the list to fractions with denominator $216$.
$$\frac{72}{216},\frac{144}{216},\frac{5}{216}$$
To sort the list, start from a single element $\frac{72}{216}$.
$$\frac{72}{216}$$
Insert $\frac{144}{216}$ to the appropriate location in the new list.
$$\frac{72}{216},\frac{144}{216}$$
Insert $\frac{5}{216}$ to the appropriate location in the new list.
$$\frac{5}{216},\frac{72}{216},\frac{144}{216}$$
Replace the obtained fractions with the initial values.