Let's divide 13011487 by 129
We want to divide 13011487 by 129.

Advancing to step 1:
The number 129 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 129

Moving on to step 2:
13 divided by 129 is 0 with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 129

Step 3:
If we divide 130 by 129, we get 1 and a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 129 away from 130, we end up with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 129

Going ahead to step 4:
When dividing 11 by 129, we get 0 with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 11 leaves us with 11.
Grab the next digit (1) from the dividend, add it to 11, then carry on: 111 / 129

Step 5:
The number 129 fits into 111 0 times, leaving a remainder of 111.
The next digit of our result is 0. 
Result so far: 100.0
The remainder is 111 after subtracting 0 from 111.
Append the next digit (4) from the dividend to 111 and continue with: 1114 / 129

Advancing to step 6:
1114 divided by 129 is 8 with a remainder of 82.
Use 8 as the next digit of our solution. 
Result so far: 1008.0
Subtract 1032 from 1114 to get 82.
Include the next digit (8) from the dividend after 82, then repeat: 828 / 129

Moving on to step 7:
129 can be fit into 828 6 times, resulting in a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 10086.0
Subtracting 774 from 828 leaves us with 54.
Take the next digit (7) from the dividend and append it to 54, then repeat: 547 / 129

Advancing to step 8:
547 divided by 129 is 4 with a remainder of 31.
Record the quotient 4 as the next digit in the result. 
Result so far: 100864.0
Subtracting 516 from 547 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 9:
If we divide 310 by 129, we get 2 and a remainder of 52.
The next digit of our result is 2. 
Result so far: 100864.2
Deduct 258 from 310 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 10:
The number 129 fits into 520 4 times, leaving a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 100864.24
Deduct 516 from 520 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
If we divide 40 by 129, we get 0 and a remainder of 40.
The next digit of our result is 0. 
Result so far: 100864.24
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
400 divided by 129 is 3 with a remainder of 13.
The next digit of our result is 3. 
Result so far: 100864.2403
If we subtract 387 from 400, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 13:
When dividing 130 by 129, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 100864.24031
Subtract 129 from 130 to get 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 14:
129 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 100864.24031
If we take 0 away from 10, we end up 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.

Moving on to step 15:
If we divide 100 by 129, we get 0 and a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 100864.24031
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 100864.24031 with a remainder of 1e-06.