We look at the division of 31083675 by 129 
We want to divide 31083675 by 129.

On to step 1:
If we divide 3 by 129, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 129

Moving on to step 2:
If we divide 31 by 129, we get 0 and a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Bring next digit (0) of the dividend behind the 31 and repeat the process: 310 / 129

Step 3:
129 goes into 310 2 times with a remainder of 52.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 258 from 310, we get 52.
Take the next digit (8) from the dividend and append it to 52, then repeat: 528 / 129

Let's proceed to step 4:
528 divided by 129 is 4 with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Deduct 516 from 528 and we're left with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 129

Moving on to step 5:
When dividing 123 by 129, we get 0 with a remainder of 123.
Record the quotient 0 as the next digit in the result. 
Result so far: 240.0
Subtract 0 from 123 to get 123.
Take the next digit (6) from the dividend and append it to 123, then repeat: 1236 / 129

Let's proceed to step 6:
The number 129 fits into 1236 9 times, leaving a remainder of 75.
Write down 9 as next digit of the result. 
Result so far: 2409.0
The remainder is 75 after subtracting 1161 from 1236.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 129

Moving on to step 7:
When dividing 757 by 129, we get 5 with a remainder of 112.
Use 5 as the next digit of our solution. 
Result so far: 24095.0
Subtracting 645 from 757 leaves us with 112.
Append the next digit (5) from the dividend to 112 and continue with: 1125 / 129

Moving on to step 8:
The number 129 fits into 1125 8 times, leaving a remainder of 93.
The number 8 becomes the next digit in our result. 
Result so far: 240958.0
If we subtract 1032 from 1125, we get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Going ahead to step 9:
129 goes into 930 7 times with a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 240958.7
If we take 903 away from 930, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 10:
129 can be fit into 270 2 times, resulting in a remainder of 12.
The next digit of our result is 2. 
Result so far: 240958.72
Subtracting 258 from 270 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 11:
The number 129 fits into 120 0 times, leaving a remainder of 120.
The next digit of our result is 0. 
Result so far: 240958.72
Subtract 0 from 120 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 12:
If we divide 1200 by 129, we get 9 and a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 240958.7209
Subtracting 1161 from 1200 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 13:
390 divided by 129 is 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 240958.72093
If we take 387 away from 390, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 14:
129 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 240958.72093
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 15:
If we divide 300 by 129, we get 2 and a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 240958.7209302
The remainder is 42 after subtracting 258 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 16:
420 divided by 129 is 3 with a remainder of 33.
Put 3 as the next digit of the answer. 
Result so far: 240958.72093023
Subtract 387 from 420 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final outcome is 240958.72093023, with a leftover of 3.3e-08.