We're dividing 572161 by 28 
The aim is to understand the frequency of 28 in 572161.

Step 1:
When dividing 5 by 28, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 28

On to step 2:
The number 28 fits into 57 2 times, leaving a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 1 after subtracting 56 from 57.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 28

Advancing to step 3:
28 can be fit into 12 0 times, resulting in a remainder of 12.
The next digit of our result is 0. 
Result so far: 20.0
Subtract 0 from 12 to get 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 28

Going ahead to step 4:
28 goes into 121 4 times with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 204.0
If we take 112 away from 121, we end up with 9.
Append the next digit (6) from the dividend to 9 and continue with: 96 / 28

Let's proceed to step 5:
28 can be fit into 96 3 times, resulting in a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 2043.0
Deduct 84 from 96 and we're left with 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 28

Let's proceed to step 6:
28 can be fit into 121 4 times, resulting in a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 20434.0
Subtract 112 from 121 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
The number 28 fits into 90 3 times, leaving a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 20434.3
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
28 can be fit into 60 2 times, resulting in a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 20434.32
The remainder is 4 after subtracting 56 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
28 can be fit into 40 1 times, resulting in a remainder of 12.
The next digit of our result is 1. 
Result so far: 20434.321
Subtracting 28 from 40 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
120 divided by 28 is 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 20434.3214
Deduct 112 from 120 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
28 can be fit into 80 2 times, resulting in a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 20434.32142
If we take 56 away from 80, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 12:
28 goes into 240 8 times with a remainder of 16.
The next digit of our result is 8. 
Result so far: 20434.321428
Subtract 224 from 240 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
If we divide 160 by 28, we get 5 and a remainder of 20.
The next digit of our result is 5. 
Result so far: 20434.3214285
Subtract 140 from 160 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
If we divide 200 by 28, we get 7 and a remainder of 4.
The next digit of our result is 7. 
Result so far: 20434.32142857
Subtract 196 from 200 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 20434.32142857 with a remainder of 4e-09.