We look at the division of 573208 by 4 
The aim is to understand the frequency of 4 in 573208.

Step 1:
5 divided by 4 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 4 away from 5, we end up with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 4

Moving on to step 2:
4 goes into 17 4 times with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we take 16 away from 17, we end up with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 4

Moving on to step 3:
If we divide 13 by 4, we get 3 and a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 143.0
If we subtract 12 from 13, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 4

On to step 4:
When dividing 12 by 4, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 1433.0
Deduct 12 from 12 and we're left with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 4

On to step 5:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 14330.0
The remainder is 0 after subtracting 0 from 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 4

Let's proceed to step 6:
When dividing 8 by 4, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 143302.0
If we subtract 8 from 8, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
The number 4 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 143302.0
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.

Step 8:
4 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 143302.0
Subtracting 0 from 0 leaves us 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 quotient of the division is 143302.0, and the remainder is 0.0.