A sum of Rs. 4,200 is divided among A, B, C and D such that the share of B is equal to \(\frac{2}{3}\)of the share of C and the share of C is equal to \(\frac{9}{13}\) of the share of D. If the ratio of the share of A and B is 8 : 9, then the difference between the shares of B and D will be: