We look at the division of 28243241 by 803 
The aim is to understand the frequency of 803 in 28243241.

Going ahead to step 1:
If we divide 2 by 803, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 803

Advancing to step 2:
The number 803 fits into 28 0 times, leaving a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Include the next digit (2) from the dividend after 28, then repeat: 282 / 803

Moving on to step 3:
803 goes into 282 0 times with a remainder of 282.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 282, we get 282.
Include the next digit (4) from the dividend after 282, then repeat: 2824 / 803

Moving on to step 4:
When dividing 2824 by 803, we get 3 with a remainder of 415.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 2409 from 2824 and we're left with 415.
Bring next digit (3) of the dividend behind the 415 and repeat the process: 4153 / 803

On to step 5:
When dividing 4153 by 803, we get 5 with a remainder of 138.
Use 5 as the next digit of our solution. 
Result so far: 35.0
The remainder is 138 after subtracting 4015 from 4153.
Include the next digit (2) from the dividend after 138, then repeat: 1382 / 803

On to step 6:
The number 803 fits into 1382 1 times, leaving a remainder of 579.
The number 1 becomes the next digit in our result. 
Result so far: 351.0
Subtracting 803 from 1382 leaves us with 579.
Grab the next digit (4) from the dividend, add it to 579, then carry on: 5794 / 803

Let's proceed to step 7:
5794 divided by 803 is 7 with a remainder of 173.
The number 7 becomes the next digit in our result. 
Result so far: 3517.0
If we subtract 5621 from 5794, we get 173.
Take the next digit (1) from the dividend and append it to 173, then repeat: 1731 / 803

Let's proceed to step 8:
803 can be fit into 1731 2 times, resulting in a remainder of 125.
Put 2 as the next digit of the answer. 
Result so far: 35172.0
Subtracting 1606 from 1731 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 9:
803 can be fit into 1250 1 times, resulting in a remainder of 447.
Record the quotient 1 as the next digit in the result. 
Result so far: 35172.1
If we subtract 803 from 1250, we get 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Going ahead to step 10:
If we divide 4470 by 803, we get 5 and a remainder of 455.
Put 5 as the next digit of the answer. 
Result so far: 35172.15
If we subtract 4015 from 4470, 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 11:
When dividing 4550 by 803, we get 5 with a remainder of 535.
Use 5 as the next digit of our solution. 
Result so far: 35172.155
Subtracting 4015 from 4550 leaves us with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

The final result is 35172.155 with a remainder of 0.0535.