We look at the division of 231231 by 28 
Let's see how many times 28 fits into 231231.

Going ahead to step 1:
The number 28 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 28

Let's proceed to step 2:
When dividing 23 by 28, we get 0 with a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 23 and we're left with 23.
Append the next digit (1) from the dividend to 23 and continue with: 231 / 28

On to step 3:
231 divided by 28 is 8 with a remainder of 7.
The next digit of our result is 8. 
Result so far: 8.0
If we take 224 away from 231, we end up with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 28

On to step 4:
72 divided by 28 is 2 with a remainder of 16.
The next digit of our result is 2. 
Result so far: 82.0
If we subtract 56 from 72, we get 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 28

Going ahead to step 5:
If we divide 163 by 28, we get 5 and a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 825.0
If we take 140 away from 163, we end up with 23.
Include the next digit (1) from the dividend after 23, then repeat: 231 / 28

On to step 6:
28 can be fit into 231 8 times, resulting in a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 8258.0
If we take 224 away from 231, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
When dividing 70 by 28, we get 2 with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 8258.2
If we subtract 56 from 70, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
28 can be fit into 140 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 8258.25
The remainder is 0 after subtracting 140 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
0 divided by 28 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8258.25
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.

Step 10:
28 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8258.25
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.

The final outcome is 8258.25, with a leftover of 0.0.