We look at the division of 4126990 by 851 
Let's see how many times 851 fits into 4126990.

Advancing to step 1:
When dividing 4 by 851, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 851

Going ahead to step 2:
851 can be fit into 41 0 times, resulting in a remainder of 41.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 41 after subtracting 0 from 41.
Append the next digit (2) from the dividend to 41 and continue with: 412 / 851

Going ahead to step 3:
When dividing 412 by 851, we get 0 with a remainder of 412.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 412 after subtracting 0 from 412.
Include the next digit (6) from the dividend after 412, then repeat: 4126 / 851

Advancing to step 4:
4126 divided by 851 is 4 with a remainder of 722.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 3404 from 4126 to get 722.
Grab the next digit (9) from the dividend, add it to 722, then carry on: 7229 / 851

Step 5:
7229 divided by 851 is 8 with a remainder of 421.
Put 8 as the next digit of the answer. 
Result so far: 48.0
The remainder is 421 after subtracting 6808 from 7229.
Take the next digit (9) from the dividend and append it to 421, then repeat: 4219 / 851

On to step 6:
851 goes into 4219 4 times with a remainder of 815.
Write down 4 as next digit of the result. 
Result so far: 484.0
The remainder is 815 after subtracting 3404 from 4219.
Bring next digit (0) of the dividend behind the 815 and repeat the process: 8150 / 851

Step 7:
851 goes into 8150 9 times with a remainder of 491.
Write down 9 as next digit of the result. 
Result so far: 4849.0
If we subtract 7659 from 8150, we get 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

On to step 8:
When dividing 4910 by 851, we get 5 with a remainder of 655.
Use 5 as the next digit of our solution. 
Result so far: 4849.5
Subtracting 4255 from 4910 leaves us with 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

On to step 9:
When dividing 6550 by 851, we get 7 with a remainder of 593.
The next digit of our result is 7. 
Result so far: 4849.57
If we subtract 5957 from 6550, we get 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5930, and continue the process.

Moving on to step 10:
When dividing 5930 by 851, we get 6 with a remainder of 824.
Use 6 as the next digit of our solution. 
Result so far: 4849.576
Deduct 5106 from 5930 and we're left with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Step 11:
The number 851 fits into 8240 9 times, leaving a remainder of 581.
The number 9 becomes the next digit in our result. 
Result so far: 4849.5769
The remainder is 581 after subtracting 7659 from 8240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

Going ahead to step 12:
851 goes into 5810 6 times with a remainder of 704.
Use 6 as the next digit of our solution. 
Result so far: 4849.57696
Subtracting 5106 from 5810 leaves us with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Going ahead to step 13:
The number 851 fits into 7040 8 times, leaving a remainder of 232.
Put 8 as the next digit of the answer. 
Result so far: 4849.576968
Deduct 6808 from 7040 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Step 14:
If we divide 2320 by 851, we get 2 and a remainder of 618.
Use 2 as the next digit of our solution. 
Result so far: 4849.5769682
Deduct 1702 from 2320 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Let's proceed to step 15:
6180 divided by 851 is 7 with a remainder of 223.
Record the quotient 7 as the next digit in the result. 
Result so far: 4849.57696827
Deduct 5957 from 6180 and we're left with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

The final outcome is 4849.57696827, with a leftover of 2.23e-07.