9d. Convert the answer from (c) to its octal expansion.

1827 = 8 * 228 + 3

228 = 8 * 28 + 4

28 = 8 * 3 + 4

3 = 8 * 0 + 3

= (3443) base 8

Check: 3 * 8^3 + 4 * 8^2 + 4 * 8^1 + 3 * 8^0 = (1827) base 10