\[\boxed{\mathbf{4.8}}\]
\[\mathbf{Формула\ нахождения\ }\]
\[\mathbf{делимого\ }\left( \mathbf{a} \right)\mathbf{\ }\mathbf{по\ }\]
\[\mathbf{делителю\ }\left( \mathbf{b} \right)\mathbf{,\ неполному}\]
\[\mathbf{частному\ }\left( \mathbf{q} \right)\mathbf{\ }\mathbf{и\ остатку\ }\left( \mathbf{r} \right)\mathbf{:}\]
\[\mathbf{a = bq + r.}\]
\[\textbf{а)}\ b = 8;\ \ q = 14;\ \ r = 6:\]
\[a = 8 \cdot 14 + 6 = 112 + 6 = 118.\]
\[\textbf{б)}\ a = 547;b = 11;\ \ r = 8:\]
\[547 = 11q + 8\]
\[11q = 547 - 8\]
\[11q = 539\]
\[q = 539\ :11 = 49.\]
\[\textbf{в)}\ a = 254;\ q = 31;\ \ r = 6:\]
\[254 = 31b + 6\]
\[31b = 254 - 6\]
\[31b = 248\]
\[b = 8.\]