12688828 divided by 803 
The aim is to understand the frequency of 803 in 12688828.

On to step 1:
803 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 803

Let's proceed to step 2:
The number 803 fits into 12 0 times, leaving a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 803

Advancing to step 3:
126 divided by 803 is 0 with a remainder of 126.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 126, we get 126.
Include the next digit (8) from the dividend after 126, then repeat: 1268 / 803

Going ahead to step 4:
The number 803 fits into 1268 1 times, leaving a remainder of 465.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 803 from 1268 leaves us with 465.
Grab the next digit (8) from the dividend, add it to 465, then carry on: 4658 / 803

Let's proceed to step 5:
When dividing 4658 by 803, we get 5 with a remainder of 643.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 4015 away from 4658, we end up with 643.
Fetch the next digit (8) from the dividend, attach it to 643 and continue: 6438 / 803

Step 6:
When dividing 6438 by 803, we get 8 with a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 158.0
The remainder is 14 after subtracting 6424 from 6438.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 803

Moving on to step 7:
The number 803 fits into 142 0 times, leaving a remainder of 142.
Record the quotient 0 as the next digit in the result. 
Result so far: 1580.0
If we take 0 away from 142, we end up with 142.
Bring next digit (8) of the dividend behind the 142 and repeat the process: 1428 / 803

Advancing to step 8:
If we divide 1428 by 803, we get 1 and a remainder of 625.
Record the quotient 1 as the next digit in the result. 
Result so far: 15801.0
If we take 803 away from 1428, we end up with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

Going ahead to step 9:
6250 divided by 803 is 7 with a remainder of 629.
Record the quotient 7 as the next digit in the result. 
Result so far: 15801.7
If we take 5621 away from 6250, we end up with 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

Going ahead to step 10:
If we divide 6290 by 803, we get 7 and a remainder of 669.
Use 7 as the next digit of our solution. 
Result so far: 15801.77
Subtract 5621 from 6290 to get 669.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6690, and continue the process.

The final result is 15801.77 with a remainder of 0.669.