We look at the division of 18111286 by 129 
We want to figure out the number of times 18111286 can be divided by 129.

Step 1:
When dividing 1 by 129, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 129

Advancing to step 2:
If we divide 18 by 129, we get 0 and a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 129

Advancing to step 3:
If we divide 181 by 129, we get 1 and a remainder of 52.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 129 from 181, we get 52.
Bring next digit (1) of the dividend behind the 52 and repeat the process: 521 / 129

On to step 4:
129 goes into 521 4 times with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 516 from 521 and we're left with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 129

Advancing to step 5:
If we divide 51 by 129, we get 0 and a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 140.0
Deduct 0 from 51 and we're left with 51.
Bring next digit (2) of the dividend behind the 51 and repeat the process: 512 / 129

Going ahead to step 6:
129 goes into 512 3 times with a remainder of 125.
Write down 3 as next digit of the result. 
Result so far: 1403.0
Subtracting 387 from 512 leaves us with 125.
Append the next digit (8) from the dividend to 125 and continue with: 1258 / 129

Step 7:
129 can be fit into 1258 9 times, resulting in a remainder of 97.
The number 9 becomes the next digit in our result. 
Result so far: 14039.0
Deduct 1161 from 1258 and we're left with 97.
Fetch the next digit (6) from the dividend, attach it to 97 and continue: 976 / 129

Moving on to step 8:
When dividing 976 by 129, we get 7 with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 140397.0
The remainder is 73 after subtracting 903 from 976.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 9:
If we divide 730 by 129, we get 5 and a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 140397.5
Deduct 645 from 730 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 10:
When dividing 850 by 129, we get 6 with a remainder of 76.
Use 6 as the next digit of our solution. 
Result so far: 140397.56
The remainder is 76 after subtracting 774 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 11:
When dividing 760 by 129, we get 5 with a remainder of 115.
Use 5 as the next digit of our solution. 
Result so far: 140397.565
The remainder is 115 after subtracting 645 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 12:
129 can be fit into 1150 8 times, resulting in a remainder of 118.
Use 8 as the next digit of our solution. 
Result so far: 140397.5658
Deduct 1032 from 1150 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 13:
129 can be fit into 1180 9 times, resulting in a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 140397.56589
Deduct 1161 from 1180 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 14:
If we divide 190 by 129, we get 1 and a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 140397.565891
If we subtract 129 from 190, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 15:
The number 129 fits into 610 4 times, leaving a remainder of 94.
The number 4 becomes the next digit in our result. 
Result so far: 140397.5658914
If we subtract 516 from 610, we get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 16:
940 divided by 129 is 7 with a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 140397.56589147
Deduct 903 from 940 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The quotient of the division is 140397.56589147, and the remainder is 3.7e-08.