Разделить столбиком 999999999999999999999999999999999999999 на 100000000000000000000000000000000000000000000000000000000000000000000000
Умножить столбиком 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 на 9999999999999999999999999999999999999999999999999999999999999999999999