We look at the division of 576221 by 8 
The aim is to understand the frequency of 8 in 576221.

Let's proceed to step 1:
The number 8 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 8

Advancing to step 2:
8 goes into 57 7 times with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 1 after subtracting 56 from 57.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 8

Moving on to step 3:
8 goes into 16 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 72.0
Subtracting 16 from 16 leaves us with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 8

On to step 4:
The number 8 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 720.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 8

Going ahead to step 5:
8 goes into 22 2 times with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 7202.0
The remainder is 6 after subtracting 16 from 22.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 8

Going ahead to step 6:
The number 8 fits into 61 7 times, leaving a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 72027.0
Subtracting 56 from 61 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
8 goes into 50 6 times with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 72027.6
Subtracting 48 from 50 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
If we divide 20 by 8, we get 2 and a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 72027.62
If we subtract 16 from 20, we 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.

Going ahead to step 9:
The number 8 fits into 40 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 72027.625
The remainder is 0 after subtracting 40 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 72027.625
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 72027.625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 72027.625 with a remainder of 0.0.