\overset{(6}{\underset{110}{\downarrow }} \overset{4}{\underset{100}{\downarrow }} \overset{0}{\underset{000}{\downarrow }} \overset{7 .}{\underset{111 .}{\downarrow }} \overset{ 2)_{8}}{\underset{010}{\downarrow }}
Thus, (6407.2)_{8} = (110100000111.010)_{2}.