\[\boxed{\mathbf{523\ }\left( \mathbf{523} \right).\ Еуроки\ - \ ДЗ\ без\ мороки}\]
Пояснение.
Решение.
\[1)\ 31\ :10 = 3\ (ост.\ 1)\]
\[47\ :10 = 4\ (ост.\ 7)\]
\[53\ :10 = 5\ (ост.\ 3)\]
\[148\ :10 = 14\ (ост.\ 8)\]
\[1596\ :10 = 159\ (ост.\ 6)\]
\[67\ 389\ :10 = 6738\ (ост.\ 9)\]
\[240\ 750\ :10 = 24\ 075\ (ост.\ 0)\]
\[2)\ 14\ :5 = 2\ (ост.\ 4)\]
\[61\ :5 = 12\ (ост.\ 1)\]
\[86\ :5 = 17\ (ост.\ 1)\]
\[235\ :5 = 47\ (ост.\ 0)\]
\[2658\ :5 = 531\ (ост.\ 3)\]
\[54\ 769\ :5 = 10\ 953\ (ост.\ 4)\]
\[687\ 903\ :5 = 137\ 580\ (ост.\ 3)\]
\[\boxed{\ \mathbf{523\ (462)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]