We're dividing 511943 by 8 
We want to divide 511943 by 8.

Step 1:
8 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 8

Step 2:
If we divide 51 by 8, we get 6 and a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 48 from 51, we get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 8

Step 3:
The number 8 fits into 31 3 times, leaving a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 63.0
Subtract 24 from 31 to get 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 8

Advancing to step 4:
8 can be fit into 79 9 times, resulting in a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 639.0
The remainder is 7 after subtracting 72 from 79.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 8

Step 5:
If we divide 74 by 8, we get 9 and a remainder of 2.
The next digit of our result is 9. 
Result so far: 6399.0
If we subtract 72 from 74, we get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 8

On to step 6:
8 goes into 23 2 times with a remainder of 7.
The next digit of our result is 2. 
Result so far: 63992.0
The remainder is 7 after subtracting 16 from 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
70 divided by 8 is 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 63992.8
Subtract 64 from 70 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
When dividing 60 by 8, we get 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 63992.87
Deduct 56 from 60 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.

Step 9:
If we divide 40 by 8, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 63992.875
If we take 40 away from 40, 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.

Step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 63992.875
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On 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: 63992.875
Subtracting 0 from 0 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.

The final result is 63992.875 with a remainder of 0.0.