We look at the division of 51083403 by 831 
Our goal is to divide 51083403 by 831.

Advancing to step 1:
831 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 831

Advancing to step 2:
The number 831 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Grab the next digit (0) from the dividend, add it to 51, then carry on: 510 / 831

On to step 3:
510 divided by 831 is 0 with a remainder of 510.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 510 to get 510.
Take the next digit (8) from the dividend and append it to 510, then repeat: 5108 / 831

On to step 4:
831 goes into 5108 6 times with a remainder of 122.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 4986 from 5108 and we're left with 122.
Append the next digit (3) from the dividend to 122 and continue with: 1223 / 831

Let's proceed to step 5:
The number 831 fits into 1223 1 times, leaving a remainder of 392.
Put 1 as the next digit of the answer. 
Result so far: 61.0
Deduct 831 from 1223 and we're left with 392.
Take the next digit (4) from the dividend and append it to 392, then repeat: 3924 / 831

Let's proceed to step 6:
3924 divided by 831 is 4 with a remainder of 600.
Use 4 as the next digit of our solution. 
Result so far: 614.0
Subtract 3324 from 3924 to get 600.
Bring next digit (0) of the dividend behind the 600 and repeat the process: 6000 / 831

Let's proceed to step 7:
When dividing 6000 by 831, we get 7 with a remainder of 183.
Record the quotient 7 as the next digit in the result. 
Result so far: 6147.0
The remainder is 183 after subtracting 5817 from 6000.
Include the next digit (3) from the dividend after 183, then repeat: 1833 / 831

On to step 8:
When dividing 1833 by 831, we get 2 with a remainder of 171.
Put 2 as the next digit of the answer. 
Result so far: 61472.0
Deduct 1662 from 1833 and we're left with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 9:
1710 divided by 831 is 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 61472.2
Subtract 1662 from 1710 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
The number 831 fits into 480 0 times, leaving a remainder of 480.
Use 0 as the next digit of our solution. 
Result so far: 61472.2
Subtracting 0 from 480 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 11:
831 can be fit into 4800 5 times, resulting in a remainder of 645.
Write down 5 as next digit of the result. 
Result so far: 61472.205
Subtracting 4155 from 4800 leaves us with 645.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6450, and continue the process.

Advancing to step 12:
If we divide 6450 by 831, we get 7 and a remainder of 633.
Put 7 as the next digit of the answer. 
Result so far: 61472.2057
Subtract 5817 from 6450 to get 633.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6330, and continue the process.

Advancing to step 13:
When dividing 6330 by 831, we get 7 with a remainder of 513.
Use 7 as the next digit of our solution. 
Result so far: 61472.20577
Subtracting 5817 from 6330 leaves us with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

After the division, we end up with 61472.20577 and a remainder of 0.000513.