The value of $$6\frac{8}{15} \div \frac{7}{9} of \left(1\frac{1}{10} + 5\frac{1}{5}\right) + \frac{2}{5} \div 7\frac{1}{5}$$ is:

A

$$\frac{25}{16}$$

B

$$\frac{5}{14}$$

C

$$\frac{25}{18}$$

D

$$\frac{5}{18}$$