Octal to Denary : Chain Calculation

[B]   Sum of PVs   Chain
This method is the best one to use with a calculator.
We don't need to know the weightings. Just the base - in this case 8.

Example: Convert the octal number 32047 to denary.

Start with the digit on the left.					3 =	3
Repeatedly:		x 8 =	24		+ 2 =	26
Multiply by the base		x 8 =	208		+ 0 =	208
then add the next digit.		x 8 =	1664		+ 4 =	1668
		x 8 =	13344		+ 7 =	13351

Until all the digits have been processed.
So the octal number 32047 is 13351 in denary.