421929 divided by 8 
We want to divide 421929 by 8.

On to step 1:
When dividing 4 by 8, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 8

Moving on to step 2:
The number 8 fits into 42 5 times, leaving a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 40 from 42 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 8

Going ahead to step 3:
If we divide 21 by 8, we get 2 and a remainder of 5.
The next digit of our result is 2. 
Result so far: 52.0
Deduct 16 from 21 and we're left with 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 8

Let's proceed to step 4:
59 divided by 8 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 527.0
Deduct 56 from 59 and we're left with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 8

Let's proceed to step 5:
When dividing 32 by 8, we get 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 5274.0
If we subtract 32 from 32, we get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 8

Going ahead to step 6:
If we divide 9 by 8, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 52741.0
If we take 8 away from 9, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
When dividing 10 by 8, we get 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 52741.1
The remainder is 2 after subtracting 8 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
8 goes into 20 2 times with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 52741.12
Deduct 16 from 20 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
8 can be fit into 40 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 52741.125
Deduct 40 from 40 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 52741.125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
The number 8 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 52741.125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 52741.125 with a remainder of 0.0.