We look at the division of 51220232 by 631 
Let's see how many times 631 fits into 51220232.

Step 1:
631 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 631

Moving on to step 2:
631 can be fit into 51 0 times, resulting in a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 631

Going ahead to step 3:
When dividing 512 by 631, we get 0 with a remainder of 512.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 512 to get 512.
Take the next digit (2) from the dividend and append it to 512, then repeat: 5122 / 631

On to step 4:
631 goes into 5122 8 times with a remainder of 74.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 5048 from 5122 to get 74.
Take the next digit (0) from the dividend and append it to 74, then repeat: 740 / 631

Let's proceed to step 5:
740 divided by 631 is 1 with a remainder of 109.
Put 1 as the next digit of the answer. 
Result so far: 81.0
If we take 631 away from 740, we end up with 109.
Take the next digit (2) from the dividend and append it to 109, then repeat: 1092 / 631

Going ahead to step 6:
631 goes into 1092 1 times with a remainder of 461.
The next digit of our result is 1. 
Result so far: 811.0
Deduct 631 from 1092 and we're left with 461.
Bring next digit (3) of the dividend behind the 461 and repeat the process: 4613 / 631

Let's proceed to step 7:
631 can be fit into 4613 7 times, resulting in a remainder of 196.
Use 7 as the next digit of our solution. 
Result so far: 8117.0
Subtracting 4417 from 4613 leaves us with 196.
Fetch the next digit (2) from the dividend, attach it to 196 and continue: 1962 / 631

Let's proceed to step 8:
The number 631 fits into 1962 3 times, leaving a remainder of 69.
The number 3 becomes the next digit in our result. 
Result so far: 81173.0
Deduct 1893 from 1962 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 9:
If we divide 690 by 631, we get 1 and a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 81173.1
The remainder is 59 after subtracting 631 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Going ahead to step 10:
631 goes into 590 0 times with a remainder of 590.
Use 0 as the next digit of our solution. 
Result so far: 81173.1
If we subtract 0 from 590, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 11:
The number 631 fits into 5900 9 times, leaving a remainder of 221.
Put 9 as the next digit of the answer. 
Result so far: 81173.109
Deduct 5679 from 5900 and we're left with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Moving on to step 12:
631 goes into 2210 3 times with a remainder of 317.
The number 3 becomes the next digit in our result. 
Result so far: 81173.1093
If we subtract 1893 from 2210, we get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Advancing to step 13:
3170 divided by 631 is 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 81173.10935
If we take 3155 away from 3170, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 14:
631 goes into 150 0 times with a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 81173.10935
Deduct 0 from 150 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 15:
The number 631 fits into 1500 2 times, leaving a remainder of 238.
Record the quotient 2 as the next digit in the result. 
Result so far: 81173.1093502
Deduct 1262 from 1500 and we're left with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Let's proceed to step 16:
The number 631 fits into 2380 3 times, leaving a remainder of 487.
The number 3 becomes the next digit in our result. 
Result so far: 81173.10935023
If we take 1893 away from 2380, we end up with 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Our division results in 81173.10935023 with a remaining 4.87e-07.