For any integers m and n, define $$m * n = 2n^2 + 3m, m \alpha n = \frac{4n}{(3m + 3)}$$ and $$m \beta n = 5n(2m - 1)$$, then $$8 * (9 \alpha (7 \beta 6)) = ?$$

A

515

B

283

C

8136

D

5432