Evaluate $5\tfrac{1}{3}\times 7\tfrac{1}{4}\div \tfrac{116}{27}$

Simplify $1-\left( \frac{1}{7}\times 3\frac{1}{2} \right)\div \frac{3}{4}$ 

Evaluate $\frac{{{27}^{\tfrac{1}{3}}}-{{8}^{\tfrac{2}{3}}}}{{{16}^{\tfrac{2}{4}}}\times 2}$

Simplify $\frac{0.00625\times {{10}^{-4}}}{0.0025\times {{10}^{-6}}}$

Simplify $1\tfrac{2}{3}+4\tfrac{1}{4}\div 1\tfrac{5}{12}$

Simplify $\frac{2\tfrac{2}{3}\times 1\tfrac{1}{2}}{4\tfrac{4}{5}}$

Simplify $\frac{3\tfrac{2}{3}\times \tfrac{5}{6}\times \tfrac{2}{3}}{\tfrac{11}{15}\times \tfrac{3}{4}\times \tfrac{2}{27}}$