We look at the division of 851086 by 503 
We're looking to find how many times 503 goes into 851086.

Moving on to step 1:
8 divided by 503 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 503

Let's proceed to step 2:
503 can be fit into 85 0 times, resulting in a remainder of 85.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 85, we end up with 85.
Grab the next digit (1) from the dividend, add it to 85, then carry on: 851 / 503

Going ahead to step 3:
When dividing 851 by 503, we get 1 with a remainder of 348.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 503 from 851 leaves us with 348.
Take the next digit (0) from the dividend and append it to 348, then repeat: 3480 / 503

Moving on to step 4:
If we divide 3480 by 503, we get 6 and a remainder of 462.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
The remainder is 462 after subtracting 3018 from 3480.
Append the next digit (8) from the dividend to 462 and continue with: 4628 / 503

Advancing to step 5:
The number 503 fits into 4628 9 times, leaving a remainder of 101.
Record the quotient 9 as the next digit in the result. 
Result so far: 169.0
Deduct 4527 from 4628 and we're left with 101.
Bring next digit (6) of the dividend behind the 101 and repeat the process: 1016 / 503

Moving on to step 6:
When dividing 1016 by 503, we get 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 1692.0
Subtract 1006 from 1016 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
100 divided by 503 is 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 1692.0
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 8:
503 can be fit into 1000 1 times, resulting in a remainder of 497.
Put 1 as the next digit of the answer. 
Result so far: 1692.01
Subtract 503 from 1000 to get 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Let's proceed to step 9:
4970 divided by 503 is 9 with a remainder of 443.
The next digit of our result is 9. 
Result so far: 1692.019
The remainder is 443 after subtracting 4527 from 4970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Advancing to step 10:
When dividing 4430 by 503, we get 8 with a remainder of 406.
Record the quotient 8 as the next digit in the result. 
Result so far: 1692.0198
Subtract 4024 from 4430 to get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Advancing to step 11:
503 can be fit into 4060 8 times, resulting in a remainder of 36.
The next digit of our result is 8. 
Result so far: 1692.01988
Subtracting 4024 from 4060 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Our division results in 1692.01988 with a remaining 3.6e-05.