\[\frac{0,(63) \cdot 0,(17) \cdot 0,(6)}{0,(51) \cdot 0,(14) \cdot 0,(3)} =\]
\[= \frac{63}{99} \cdot \frac{17}{99} \cdot \frac{6}{9}\ :\frac{51}{99}\ :\frac{14}{99}\ :\frac{3}{9} =\]
\[= \frac{63 \cdot 2}{3 \cdot 14} = \frac{9}{3} = 3\]
\[Ответ:3.\]