Let's divide 40990398 by 129
Our goal is to divide 40990398 by 129.

Moving on to step 1:
129 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 129

Step 2:
129 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Include the next digit (9) from the dividend after 40, then repeat: 409 / 129

On to step 3:
If we divide 409 by 129, we get 3 and a remainder of 22.
The next digit of our result is 3. 
Result so far: 3.0
If we take 387 away from 409, we end up with 22.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 129

On to step 4:
When dividing 229 by 129, we get 1 with a remainder of 100.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we take 129 away from 229, we end up with 100.
Bring next digit (0) of the dividend behind the 100 and repeat the process: 1000 / 129

Advancing to step 5:
When dividing 1000 by 129, we get 7 with a remainder of 97.
The next digit of our result is 7. 
Result so far: 317.0
Subtract 903 from 1000 to get 97.
Append the next digit (3) from the dividend to 97 and continue with: 973 / 129

Step 6:
129 can be fit into 973 7 times, resulting in a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 3177.0
Subtract 903 from 973 to get 70.
Take the next digit (9) from the dividend and append it to 70, then repeat: 709 / 129

Moving on to step 7:
If we divide 709 by 129, we get 5 and a remainder of 64.
Put 5 as the next digit of the answer. 
Result so far: 31775.0
If we take 645 away from 709, we end up with 64.
Grab the next digit (8) from the dividend, add it to 64, then carry on: 648 / 129

Let's proceed to step 8:
129 can be fit into 648 5 times, resulting in a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 317755.0
If we subtract 645 from 648, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
When dividing 30 by 129, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 317755.0
Subtracting 0 from 30 leaves us 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.

Going ahead to step 10:
129 can be fit into 300 2 times, resulting in a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 317755.02
If we take 258 away from 300, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 11:
The number 129 fits into 420 3 times, leaving a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 317755.023
Subtracting 387 from 420 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 12:
If we divide 330 by 129, we get 2 and a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 317755.0232
Deduct 258 from 330 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 13:
When dividing 720 by 129, we get 5 with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 317755.02325
Subtract 645 from 720 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 14:
The number 129 fits into 750 5 times, leaving a remainder of 105.
Write down 5 as next digit of the result. 
Result so far: 317755.023255
If we subtract 645 from 750, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

The final result is 317755.023255 with a remainder of 1.05e-05.