§ Задание 392
\[\boxed{\text{5.392.}}\]

\[43 + 207 = 250\]
\[250\ :25 = 10\]
\[10 + 37 = 47\]

\[= 38 \cdot 203 + 75 \cdot 38 + 38 \cdot 22 =\]
\[= 38 \cdot (203 + 75 + 22) =\]
\[= 38 \cdot 300 = 11\ 400\ \]
\[\boxed{\text{5.392.}}\]

\[43 + 207 = 250\]
\[250\ :25 = 10\]
\[10 + 37 = 47\]

\[= 38 \cdot 203 + 75 \cdot 38 + 38 \cdot 22 =\]
\[= 38 \cdot (203 + 75 + 22) =\]
\[= 38 \cdot 300 = 11\ 400\ \]