Let's divide 12191905 by 631
We want to figure out the number of times 12191905 can be divided by 631.

Advancing to step 1:
The number 631 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 631

Moving on to step 2:
12 divided by 631 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 631

Going ahead to step 3:
The number 631 fits into 121 0 times, leaving a remainder of 121.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Append the next digit (9) from the dividend to 121 and continue with: 1219 / 631

Moving on to step 4:
631 can be fit into 1219 1 times, resulting in a remainder of 588.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 588 after subtracting 631 from 1219.
Bring next digit (1) of the dividend behind the 588 and repeat the process: 5881 / 631

Step 5:
The number 631 fits into 5881 9 times, leaving a remainder of 202.
Write down 9 as next digit of the result. 
Result so far: 19.0
The remainder is 202 after subtracting 5679 from 5881.
Bring next digit (9) of the dividend behind the 202 and repeat the process: 2029 / 631

Advancing to step 6:
631 can be fit into 2029 3 times, resulting in a remainder of 136.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
If we take 1893 away from 2029, we end up with 136.
Append the next digit (0) from the dividend to 136 and continue with: 1360 / 631

Going ahead to step 7:
631 goes into 1360 2 times with a remainder of 98.
Write down 2 as next digit of the result. 
Result so far: 1932.0
Deduct 1262 from 1360 and we're left with 98.
Append the next digit (5) from the dividend to 98 and continue with: 985 / 631

Moving on to step 8:
631 can be fit into 985 1 times, resulting in a remainder of 354.
Record the quotient 1 as the next digit in the result. 
Result so far: 19321.0
If we subtract 631 from 985, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

On to step 9:
631 can be fit into 3540 5 times, resulting in a remainder of 385.
Use 5 as the next digit of our solution. 
Result so far: 19321.5
If we take 3155 away from 3540, we end up with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Step 10:
If we divide 3850 by 631, we get 6 and a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 19321.56
If we subtract 3786 from 3850, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 11:
631 goes into 640 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 19321.561
If we take 631 away from 640, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 12:
If we divide 90 by 631, we get 0 and a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 19321.561
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 13:
If we divide 900 by 631, we get 1 and a remainder of 269.
Write down 1 as next digit of the result. 
Result so far: 19321.56101
Deduct 631 from 900 and we're left with 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Moving on to step 14:
631 goes into 2690 4 times with a remainder of 166.
Put 4 as the next digit of the answer. 
Result so far: 19321.561014
Subtract 2524 from 2690 to get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 15:
If we divide 1660 by 631, we get 2 and a remainder of 398.
The next digit of our result is 2. 
Result so far: 19321.5610142
Subtracting 1262 from 1660 leaves us with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Step 16:
3980 divided by 631 is 6 with a remainder of 194.
The next digit of our result is 6. 
Result so far: 19321.56101426
If we take 3786 away from 3980, we end up with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

In conclusion, the division gives 19321.56101426 with a balance of 1.94e-07.