We look at the division of 12613153 by 803 
We're looking to find how many times 803 goes into 12613153.

Let's proceed to step 1:
803 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
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 / 803

Going ahead to step 2:
When dividing 12 by 803, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Include the next digit (6) from the dividend after 12, then repeat: 126 / 803

Step 3:
If we divide 126 by 803, we get 0 and a remainder of 126.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 126 and we're left with 126.
Fetch the next digit (1) from the dividend, attach it to 126 and continue: 1261 / 803

Advancing to step 4:
803 can be fit into 1261 1 times, resulting in a remainder of 458.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 458 after subtracting 803 from 1261.
Fetch the next digit (3) from the dividend, attach it to 458 and continue: 4583 / 803

Step 5:
4583 divided by 803 is 5 with a remainder of 568.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Deduct 4015 from 4583 and we're left with 568.
Bring next digit (1) of the dividend behind the 568 and repeat the process: 5681 / 803

Moving on to step 6:
803 goes into 5681 7 times with a remainder of 60.
The next digit of our result is 7. 
Result so far: 157.0
If we subtract 5621 from 5681, we get 60.
Take the next digit (5) from the dividend and append it to 60, then repeat: 605 / 803

Step 7:
605 divided by 803 is 0 with a remainder of 605.
Use 0 as the next digit of our solution. 
Result so far: 1570.0
If we take 0 away from 605, we end up with 605.
Grab the next digit (3) from the dividend, add it to 605, then carry on: 6053 / 803

Advancing to step 8:
The number 803 fits into 6053 7 times, leaving a remainder of 432.
Put 7 as the next digit of the answer. 
Result so far: 15707.0
If we subtract 5621 from 6053, we get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Step 9:
The number 803 fits into 4320 5 times, leaving a remainder of 305.
Record the quotient 5 as the next digit in the result. 
Result so far: 15707.5
Deduct 4015 from 4320 and we're left with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Advancing to step 10:
The number 803 fits into 3050 3 times, leaving a remainder of 641.
The number 3 becomes the next digit in our result. 
Result so far: 15707.53
Subtract 2409 from 3050 to get 641.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6410, and continue the process.

Moving on to step 11:
6410 divided by 803 is 7 with a remainder of 789.
Use 7 as the next digit of our solution. 
Result so far: 15707.537
If we subtract 5621 from 6410, we get 789.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7890, and continue the process.

On to step 12:
If we divide 7890 by 803, we get 9 and a remainder of 663.
The next digit of our result is 9. 
Result so far: 15707.5379
The remainder is 663 after subtracting 7227 from 7890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

Advancing to step 13:
803 can be fit into 6630 8 times, resulting in a remainder of 206.
Write down 8 as next digit of the result. 
Result so far: 15707.53798
Deduct 6424 from 6630 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Advancing to step 14:
The number 803 fits into 2060 2 times, leaving a remainder of 454.
Write down 2 as next digit of the result. 
Result so far: 15707.537982
Subtract 1606 from 2060 to get 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 15:
The number 803 fits into 4540 5 times, leaving a remainder of 525.
Use 5 as the next digit of our solution. 
Result so far: 15707.5379825
Subtract 4015 from 4540 to get 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Advancing to step 16:
803 goes into 5250 6 times with a remainder of 432.
Use 6 as the next digit of our solution. 
Result so far: 15707.53798256
If we subtract 4818 from 5250, we get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

The final outcome is 15707.53798256, with a leftover of 4.32e-07.