We look at the division of 10426149 by 999 
We want to divide 10426149 by 999.

Let's proceed to step 1:
When dividing 1 by 999, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 999

Advancing to step 2:
If we divide 10 by 999, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 10, we get 10.
Append the next digit (4) from the dividend to 10 and continue with: 104 / 999

Step 3:
999 goes into 104 0 times with a remainder of 104.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 104, we get 104.
Fetch the next digit (2) from the dividend, attach it to 104 and continue: 1042 / 999

Going ahead to step 4:
999 goes into 1042 1 times with a remainder of 43.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 43 after subtracting 999 from 1042.
Grab the next digit (6) from the dividend, add it to 43, then carry on: 436 / 999

Step 5:
999 goes into 436 0 times with a remainder of 436.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 436 to get 436.
Bring next digit (1) of the dividend behind the 436 and repeat the process: 4361 / 999

On to step 6:
4361 divided by 999 is 4 with a remainder of 365.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Subtracting 3996 from 4361 leaves us with 365.
Fetch the next digit (4) from the dividend, attach it to 365 and continue: 3654 / 999

Step 7:
If we divide 3654 by 999, we get 3 and a remainder of 657.
Write down 3 as next digit of the result. 
Result so far: 1043.0
The remainder is 657 after subtracting 2997 from 3654.
Fetch the next digit (9) from the dividend, attach it to 657 and continue: 6579 / 999

Advancing to step 8:
When dividing 6579 by 999, we get 6 with a remainder of 585.
The number 6 becomes the next digit in our result. 
Result so far: 10436.0
Subtract 5994 from 6579 to get 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

Moving on to step 9:
The number 999 fits into 5850 5 times, leaving a remainder of 855.
Put 5 as the next digit of the answer. 
Result so far: 10436.5
Deduct 4995 from 5850 and we're left with 855.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8550, and continue the process.

Step 10:
999 goes into 8550 8 times with a remainder of 558.
The next digit of our result is 8. 
Result so far: 10436.58
Deduct 7992 from 8550 and we're left with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Moving on to step 11:
999 goes into 5580 5 times with a remainder of 585.
The number 5 becomes the next digit in our result. 
Result so far: 10436.585
Deduct 4995 from 5580 and we're left with 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

On to step 12:
5850 divided by 999 is 5 with a remainder of 855.
Put 5 as the next digit of the answer. 
Result so far: 10436.5855
Subtract 4995 from 5850 to get 855.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8550, and continue the process.

The final result is 10436.5855 with a remainder of 0.00855.