We're dividing 571791 by 51 
We're looking to find how many times 51 goes into 571791.

Moving on to step 1:
5 divided by 51 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 51

Let's proceed to step 2:
The number 51 fits into 57 1 times, leaving a remainder of 6.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 51 from 57 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 51

Let's proceed to step 3:
61 divided by 51 is 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 51 from 61 to get 10.
Append the next digit (7) from the dividend to 10 and continue with: 107 / 51

Step 4:
If we divide 107 by 51, we get 2 and a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 112.0
Subtract 102 from 107 to get 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 51

Advancing to step 5:
If we divide 59 by 51, we get 1 and a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1121.0
If we take 51 away from 59, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 51

On to step 6:
51 goes into 81 1 times with a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 11211.0
If we take 51 away from 81, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 7:
300 divided by 51 is 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 11211.5
If we take 255 away from 300, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 8:
When dividing 450 by 51, we get 8 with a remainder of 42.
The next digit of our result is 8. 
Result so far: 11211.58
The remainder is 42 after subtracting 408 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 9:
If we divide 420 by 51, we get 8 and a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 11211.588
Subtracting 408 from 420 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 11211.588 with a remainder of 0.0012.