plz help

$$\\\frac{3}{5}\div 7\\\\ =\frac{3}{5}\div \frac{7}{1}\\\\ =\frac{3}{5}\times \frac{1}{7}\\\\ =\frac{3}{35}$$

$${\frac{{\frac{{\mathtt{3}}}{{\mathtt{5}}}}}{{\mathtt{7}}}} = {\frac{{\mathtt{3}}}{{\mathtt{35}}}} = {\mathtt{0.085\: \!714\: \!285\: \!714\: \!285\: \!7}}$$