12092104 ÷ 851 
Our goal is to divide 12092104 by 851.

Let's proceed to step 1:
If we divide 1 by 851, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 851

On to step 2:
851 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 851

On to step 3:
When dividing 120 by 851, we get 0 with a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 120 after subtracting 0 from 120.
Take the next digit (9) from the dividend and append it to 120, then repeat: 1209 / 851

On to step 4:
1209 divided by 851 is 1 with a remainder of 358.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 851 from 1209, we get 358.
Append the next digit (2) from the dividend to 358 and continue with: 3582 / 851

On to step 5:
The number 851 fits into 3582 4 times, leaving a remainder of 178.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we take 3404 away from 3582, we end up with 178.
Fetch the next digit (1) from the dividend, attach it to 178 and continue: 1781 / 851

On to step 6:
1781 divided by 851 is 2 with a remainder of 79.
The number 2 becomes the next digit in our result. 
Result so far: 142.0
Subtracting 1702 from 1781 leaves us with 79.
Grab the next digit (0) from the dividend, add it to 79, then carry on: 790 / 851

Step 7:
The number 851 fits into 790 0 times, leaving a remainder of 790.
Record the quotient 0 as the next digit in the result. 
Result so far: 1420.0
Deduct 0 from 790 and we're left with 790.
Include the next digit (4) from the dividend after 790, then repeat: 7904 / 851

Advancing to step 8:
851 can be fit into 7904 9 times, resulting in a remainder of 245.
The next digit of our result is 9. 
Result so far: 14209.0
Subtract 7659 from 7904 to get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Going ahead to step 9:
2450 divided by 851 is 2 with a remainder of 748.
Use 2 as the next digit of our solution. 
Result so far: 14209.2
If we take 1702 away from 2450, we end up with 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Going ahead to step 10:
851 can be fit into 7480 8 times, resulting in a remainder of 672.
The number 8 becomes the next digit in our result. 
Result so far: 14209.28
The remainder is 672 after subtracting 6808 from 7480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Going ahead to step 11:
851 can be fit into 6720 7 times, resulting in a remainder of 763.
Use 7 as the next digit of our solution. 
Result so far: 14209.287
Subtracting 5957 from 6720 leaves us with 763.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7630, and continue the process.

Going ahead to step 12:
When dividing 7630 by 851, we get 8 with a remainder of 822.
Record the quotient 8 as the next digit in the result. 
Result so far: 14209.2878
Deduct 6808 from 7630 and we're left with 822.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8220, and continue the process.

On to step 13:
851 goes into 8220 9 times with a remainder of 561.
The number 9 becomes the next digit in our result. 
Result so far: 14209.28789
If we take 7659 away from 8220, we end up with 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

On to step 14:
5610 divided by 851 is 6 with a remainder of 504.
Record the quotient 6 as the next digit in the result. 
Result so far: 14209.287896
If we take 5106 away from 5610, we end up with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Step 15:
851 goes into 5040 5 times with a remainder of 785.
Record the quotient 5 as the next digit in the result. 
Result so far: 14209.2878965
Subtract 4255 from 5040 to get 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

On to step 16:
851 goes into 7850 9 times with a remainder of 191.
The next digit of our result is 9. 
Result so far: 14209.28789659
Subtract 7659 from 7850 to get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

After the division, we end up with 14209.28789659 and a remainder of 1.91e-07.