2745 Octal in Decimal

Let's convert the octal number 2745 to decimal without using a calculator:

Write down the powers of 8 starting from the right, with the first digit corresponding to 8⁰, the second to 8¹, the third to 8², and so on.

Convert each octal digit to its decimal equivalent:

28 = 210

78 = 710

48 = 410

58 = 510

Multiply each octal digit by its corresponding power of 8 and sum the results.

(2 × 512) + (7 × 64) + (4 × 8) + (5 × 1) = 1024 + 448 + 32 + 5 = 1509