Octal codes are often used to write the numerical value of a binary number because it is easier to convert from binary to octal, instead of binary to decimal. You can convert to octal on sight, and it simply requires grouping the binary bits into groups of three, whereas converting to decimal requires repeated division by 10102 or 1010. Actually, grouping into three bits is the same as dividing by 1002 or 810 so the process is really the same. Divide by 8 to get octal. Divide by 10 to get decimal.
262 octal is178 decimal.262 decimal is406 octal
Octal = 56704534 Decimal = 12290396
2765 octal equals 1525 decimal
Octal: 56704534 Decimal: 12290396
A45C: Decimal = 42076 Octal = 122134
BB895C: Octal = 56704534 Decimal = 12290396
There are none, apart from the fact that people are not familiar with them. Also, there is a risk of confusion with decimal numbers.
Decimal 18 = 22 octal
24 octal is 8 * 2 + 4 is 20 decimal
I think people use the decimal system because we have 10 fingers and it's more intuitive that way. Computers use octal or hex because the base is a power of 2 (8=2^3, 16=2^4), and the computers work in binary, 0 or 1, 2 values.
(83)base10 to octal
255 in decimal. 377 in octal. 11111111 in binary.