We look at the division of 13431103 by 817 
We want to divide 13431103 by 817.

Step 1:
817 goes into 1 0 times with 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.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 817

Step 2:
817 can be fit into 13 0 times, resulting in a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 817

Advancing to step 3:
The number 817 fits into 134 0 times, leaving a remainder of 134.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 134 after subtracting 0 from 134.
Append the next digit (3) from the dividend to 134 and continue with: 1343 / 817

Moving on to step 4:
1343 divided by 817 is 1 with a remainder of 526.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 817 from 1343, we get 526.
Include the next digit (1) from the dividend after 526, then repeat: 5261 / 817

Going ahead to step 5:
5261 divided by 817 is 6 with a remainder of 359.
Write down 6 as next digit of the result. 
Result so far: 16.0
The remainder is 359 after subtracting 4902 from 5261.
Fetch the next digit (1) from the dividend, attach it to 359 and continue: 3591 / 817

Step 6:
If we divide 3591 by 817, we get 4 and a remainder of 323.
Write down 4 as next digit of the result. 
Result so far: 164.0
The remainder is 323 after subtracting 3268 from 3591.
Fetch the next digit (0) from the dividend, attach it to 323 and continue: 3230 / 817

Advancing to step 7:
3230 divided by 817 is 3 with a remainder of 779.
Put 3 as the next digit of the answer. 
Result so far: 1643.0
Subtracting 2451 from 3230 leaves us with 779.
Append the next digit (3) from the dividend to 779 and continue with: 7793 / 817

Advancing to step 8:
7793 divided by 817 is 9 with a remainder of 440.
Put 9 as the next digit of the answer. 
Result so far: 16439.0
If we take 7353 away from 7793, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 9:
The number 817 fits into 4400 5 times, leaving a remainder of 315.
Write down 5 as next digit of the result. 
Result so far: 16439.5
Subtracting 4085 from 4400 leaves us with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

On to step 10:
If we divide 3150 by 817, we get 3 and a remainder of 699.
Use 3 as the next digit of our solution. 
Result so far: 16439.53
Subtracting 2451 from 3150 leaves us with 699.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6990, and continue the process.

Advancing to step 11:
When dividing 6990 by 817, we get 8 with a remainder of 454.
The next digit of our result is 8. 
Result so far: 16439.538
Deduct 6536 from 6990 and we're left with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Advancing to step 12:
The number 817 fits into 4540 5 times, leaving a remainder of 455.
Use 5 as the next digit of our solution. 
Result so far: 16439.5385
If we subtract 4085 from 4540, we get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

On to step 13:
817 can be fit into 4550 5 times, resulting in a remainder of 465.
Record the quotient 5 as the next digit in the result. 
Result so far: 16439.53855
If we take 4085 away from 4550, we end up with 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

After the division, we end up with 16439.53855 and a remainder of 0.000465.