We're dividing 12100431 by 938 
We want to divide 12100431 by 938.

Advancing to step 1:
If we divide 1 by 938, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 938

Moving on to step 2:
If we divide 12 by 938, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 938

Going ahead to step 3:
The number 938 fits into 121 0 times, leaving a remainder of 121.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 121 leaves us with 121.
Append the next digit (0) from the dividend to 121 and continue with: 1210 / 938

Moving on to step 4:
1210 divided by 938 is 1 with a remainder of 272.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 938 from 1210 to get 272.
Bring next digit (0) of the dividend behind the 272 and repeat the process: 2720 / 938

Let's proceed to step 5:
The number 938 fits into 2720 2 times, leaving a remainder of 844.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 1876 from 2720 leaves us with 844.
Append the next digit (4) from the dividend to 844 and continue with: 8444 / 938

Step 6:
When dividing 8444 by 938, we get 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 129.0
Subtracting 8442 from 8444 leaves us with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 938

Going ahead to step 7:
938 goes into 23 0 times with a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 1290.0
Deduct 0 from 23 and we're left with 23.
Grab the next digit (1) from the dividend, add it to 23, then carry on: 231 / 938

Going ahead to step 8:
If we divide 231 by 938, we get 0 and a remainder of 231.
The number 0 becomes the next digit in our result. 
Result so far: 12900.0
Subtract 0 from 231 to get 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Going ahead to step 9:
2310 divided by 938 is 2 with a remainder of 434.
Record the quotient 2 as the next digit in the result. 
Result so far: 12900.2
The remainder is 434 after subtracting 1876 from 2310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4340, and continue the process.

Let's proceed to step 10:
938 can be fit into 4340 4 times, resulting in a remainder of 588.
Record the quotient 4 as the next digit in the result. 
Result so far: 12900.24
Subtract 3752 from 4340 to get 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

On to step 11:
The number 938 fits into 5880 6 times, leaving a remainder of 252.
The next digit of our result is 6. 
Result so far: 12900.246
Subtract 5628 from 5880 to get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Moving on to step 12:
If we divide 2520 by 938, we get 2 and a remainder of 644.
Record the quotient 2 as the next digit in the result. 
Result so far: 12900.2462
If we subtract 1876 from 2520, we get 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Going ahead to step 13:
938 can be fit into 6440 6 times, resulting in a remainder of 812.
Use 6 as the next digit of our solution. 
Result so far: 12900.24626
If we take 5628 away from 6440, we end up with 812.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8120, and continue the process.

Let's proceed to step 14:
8120 divided by 938 is 8 with a remainder of 616.
The number 8 becomes the next digit in our result. 
Result so far: 12900.246268
Subtracting 7504 from 8120 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Going ahead to step 15:
938 can be fit into 6160 6 times, resulting in a remainder of 532.
Use 6 as the next digit of our solution. 
Result so far: 12900.2462686
Deduct 5628 from 6160 and we're left with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

On to step 16:
The number 938 fits into 5320 5 times, leaving a remainder of 630.
Record the quotient 5 as the next digit in the result. 
Result so far: 12900.24626865
Subtracting 4690 from 5320 leaves us with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

In conclusion, the division gives 12900.24626865 with a balance of 6.3e-07.