Elegant Exponent Exposition (Posted on 2009-02-09)

Substitute each of the capital letters in bold by a different decimal digit from 1 to 9 and determine the minimum positive integer value that the following cryptarithmetic expression can assume.

(A/B)^{C} + (D/E)^{F} + (G/H)^{I}

How about the maximum positive integer value that this expression can assume?