Let's divide 20772891 by 129
We want to divide 20772891 by 129.

On to step 1:
129 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 129

Step 2:
If we divide 20 by 129, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Bring next digit (7) of the dividend behind the 20 and repeat the process: 207 / 129

Advancing to step 3:
If we divide 207 by 129, we get 1 and a remainder of 78.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 129 from 207 and we're left with 78.
Take the next digit (7) from the dividend and append it to 78, then repeat: 787 / 129

Advancing to step 4:
129 can be fit into 787 6 times, resulting in a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 13 after subtracting 774 from 787.
Include the next digit (2) from the dividend after 13, then repeat: 132 / 129

Going ahead to step 5:
The number 129 fits into 132 1 times, leaving a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 161.0
Subtracting 129 from 132 leaves us with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 129

Advancing to step 6:
When dividing 38 by 129, we get 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 1610.0
Deduct 0 from 38 and we're left with 38.
Append the next digit (9) from the dividend to 38 and continue with: 389 / 129

Step 7:
The number 129 fits into 389 3 times, leaving a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 16103.0
If we take 387 away from 389, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 129

On to step 8:
129 can be fit into 21 0 times, resulting in a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 161030.0
Deduct 0 from 21 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 9:
129 goes into 210 1 times with a remainder of 81.
Put 1 as the next digit of the answer. 
Result so far: 161030.1
If we subtract 129 from 210, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 10:
810 divided by 129 is 6 with a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 161030.16
If we take 774 away from 810, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 11:
360 divided by 129 is 2 with a remainder of 102.
Write down 2 as next digit of the result. 
Result so far: 161030.162
Deduct 258 from 360 and we're left with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Advancing to step 12:
If we divide 1020 by 129, we get 7 and a remainder of 117.
Use 7 as the next digit of our solution. 
Result so far: 161030.1627
If we subtract 903 from 1020, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Going ahead to step 13:
129 goes into 1170 9 times with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 161030.16279
The remainder is 9 after subtracting 1161 from 1170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 14:
90 divided by 129 is 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 161030.16279
Deduct 0 from 90 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 15:
If we divide 900 by 129, we get 6 and a remainder of 126.
The number 6 becomes the next digit in our result. 
Result so far: 161030.1627906
Subtracting 774 from 900 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Going ahead to step 16:
1260 divided by 129 is 9 with a remainder of 99.
Record the quotient 9 as the next digit in the result. 
Result so far: 161030.16279069
Deduct 1161 from 1260 and we're left with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

The final result is 161030.16279069 with a remainder of 9.9e-08.