Find the difference between $\frac{8}{9}$ and $\frac{2}{7}$.

Convert mixed fraction into improper fraction:

$3\frac{7}{18}$

Convert improper fraction as mixed fraction:

$\frac{99}{7}$

Convert improper fraction as mixed fraction:

$\frac{47}{6}$

Convert mixed fraction into improper fraction:

$12\frac{1}{9}$

Evaluate: $\frac{2}{3}\times 6$

Evaluate: $8\frac{1}{3}\times 5$