_{n}denotes the incidence of a single digit d precisely n times. For example, 4

_{6}7

_{3}8

_{5}would denote 44444477788888.

Find the value of each of A, B, C, D, E and F satisfying this equation:

2

_{A}3

_{B}5

_{C}+ 3

_{D}5

_{E}2

_{F}= 5

_{3}7

_{2}8

_{3}5

_{1}7

_{3}