9. Find the fraction, in lowest terms, represented by the following expansions
a) $(.123)_{7}$
c) $(. \overline{17})_{11}$
b) $(.0 \overline{13})_{6}$
d) $(. \overline{A B C})_{16}$.
9. a) $\frac{66}{343}$
b) $\frac{3}{70}$
c) $\frac{3}{20}$
d) $\frac{916}{1365}$