We're dividing 99576791 by 129 
We want to divide 99576791 by 129.

Moving on to step 1:
129 goes into 9 0 times with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 129

Let's proceed to step 2:
If we divide 99 by 129, we get 0 and a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Append the next digit (5) from the dividend to 99 and continue with: 995 / 129

Advancing to step 3:
129 can be fit into 995 7 times, resulting in a remainder of 92.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 92 after subtracting 903 from 995.
Grab the next digit (7) from the dividend, add it to 92, then carry on: 927 / 129

On to step 4:
When dividing 927 by 129, we get 7 with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 77.0
If we subtract 903 from 927, we get 24.
Bring next digit (6) of the dividend behind the 24 and repeat the process: 246 / 129

Step 5:
When dividing 246 by 129, we get 1 with a remainder of 117.
Record the quotient 1 as the next digit in the result. 
Result so far: 771.0
If we take 129 away from 246, we end up with 117.
Include the next digit (7) from the dividend after 117, then repeat: 1177 / 129

Let's proceed to step 6:
129 can be fit into 1177 9 times, resulting in a remainder of 16.
The next digit of our result is 9. 
Result so far: 7719.0
If we subtract 1161 from 1177, we get 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 129

Let's proceed to step 7:
129 can be fit into 169 1 times, resulting in a remainder of 40.
The next digit of our result is 1. 
Result so far: 77191.0
If we subtract 129 from 169, we get 40.
Append the next digit (1) from the dividend to 40 and continue with: 401 / 129

Moving on to step 8:
129 goes into 401 3 times with a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 771913.0
If we take 387 away from 401, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 9:
The number 129 fits into 140 1 times, leaving a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 771913.1
The remainder is 11 after subtracting 129 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 10:
The number 129 fits into 110 0 times, leaving a remainder of 110.
The next digit of our result is 0. 
Result so far: 771913.1
Deduct 0 from 110 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 11:
129 can be fit into 1100 8 times, resulting in a remainder of 68.
Record the quotient 8 as the next digit in the result. 
Result so far: 771913.108
The remainder is 68 after subtracting 1032 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 12:
129 goes into 680 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 771913.1085
Deduct 645 from 680 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 13:
129 goes into 350 2 times with a remainder of 92.
Write down 2 as next digit of the result. 
Result so far: 771913.10852
If we subtract 258 from 350, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 14:
129 can be fit into 920 7 times, resulting in a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 771913.108527
Subtracting 903 from 920 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 15:
129 can be fit into 170 1 times, resulting in a remainder of 41.
Use 1 as the next digit of our solution. 
Result so far: 771913.1085271
If we subtract 129 from 170, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 16:
When dividing 410 by 129, we get 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 771913.10852713
The remainder is 23 after subtracting 387 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

In conclusion, the division gives 771913.10852713 with a balance of 2.3e-08.