129751 ÷ 15 
Our goal is to divide 129751 by 15.

Going ahead to step 1:
The number 15 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 15

Step 2:
15 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 15

Moving on to step 3:
If we divide 129 by 15, we get 8 and a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 9 after subtracting 120 from 129.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 15

Let's proceed to step 4:
When dividing 97 by 15, we get 6 with a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
Subtracting 90 from 97 leaves us with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 15

Going ahead to step 5:
When dividing 75 by 15, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 865.0
If we take 75 away from 75, we end up with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 15

On to step 6:
1 divided by 15 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 8650.0
The remainder is 1 after subtracting 0 from 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
The number 15 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 8650.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 8650.06
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 8650.066
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 8650.066 with a balance of 0.001.