57580 ÷ 4 
The aim is to understand the frequency of 4 in 57580.

Advancing to step 1:
The number 4 fits into 5 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 4 from 5 and we're left with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 4

Moving on to step 2:
If we divide 17 by 4, we get 4 and a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 16 from 17, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 4

Going ahead to step 3:
The number 4 fits into 15 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 143.0
Subtracting 12 from 15 leaves us with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 4

On to step 4:
4 goes into 38 9 times with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 1439.0
If we subtract 36 from 38, we get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 4

Let's proceed to step 5:
20 divided by 4 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 14395.0
Subtracting 20 from 20 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.

Moving on to step 6:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 14395.0
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.

Step 7:
4 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 14395.0
Subtract 0 from 0 to 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.

The final result is 14395.0 with a remainder of 0.0.