§ Задание 308
\[\boxed{\text{5.308.}}\]

\[406 + 102 = 508\]
\[508 \cdot 2 = 1016\]

\[908 - 706 = 202\]
\[202 \cdot 8 = 1616\]
\[1616 + 84 = 1700\]
\[\boxed{\text{5.308.}}\]

\[406 + 102 = 508\]
\[508 \cdot 2 = 1016\]

\[908 - 706 = 202\]
\[202 \cdot 8 = 1616\]
\[1616 + 84 = 1700\]