Let's divide 816139 by 8
Let's see how many times 8 fits into 816139.

Advancing to step 1:
8 divided by 8 is 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 8 from 8, we get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 8

Going ahead to step 2:
If we divide 1 by 8, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 8

Advancing to step 3:
8 can be fit into 16 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
If we subtract 16 from 16, we get 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 8

On to step 4:
When dividing 1 by 8, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 1020.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 8

Let's proceed to step 5:
8 can be fit into 13 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 10201.0
Subtracting 8 from 13 leaves us with 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 8

On to step 6:
8 goes into 59 7 times with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 102017.0
Subtract 56 from 59 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
When dividing 30 by 8, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 102017.3
Subtracting 24 from 30 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
The number 8 fits into 60 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 102017.37
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
If we divide 40 by 8, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 102017.375
Subtracting 40 from 40 leaves us 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.

Moving on to step 10:
0 divided by 8 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 102017.375
If we take 0 away from 0, we end up 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.

Going ahead to step 11:
8 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 102017.375
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.

After the division, we end up with 102017.375 and a remainder of 0.0.