If $$M = \left(\frac{3}{7}\right) \div \left(\frac{6}{5}\right) \times \left(\frac{2}{3}\right) + \left(\frac{1}{5}\right) \times \left(\frac{3}{2}\right)$$ and $$N = \left(\frac{2}{5}\right) \times \left(\frac{5}{6}\right) \div \left(\frac{1}{3}\right) + \left(\frac{3}{5}\right) \times \left(\frac{2}{3}\right) \div \left(\frac{3}{5}\right)$$, then what is the value of $$\frac{M}{N}$$?

A

$$\frac{207}{560}$$

B

$$\frac{339}{1120}$$

C

$$\frac{113}{350}$$

D

$$\frac{69}{175}$$