We look at the division of 658321 by 4 
The aim is to understand the frequency of 4 in 658321.

Let's proceed to step 1:
If we divide 6 by 4, we get 1 and a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 4 from 6, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 4

Going ahead to step 2:
4 can be fit into 25 6 times, resulting in a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 24 from 25, we get 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 4

Let's proceed to step 3:
If we divide 18 by 4, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 164.0
Subtract 16 from 18 to get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 4

Step 4:
The number 4 fits into 23 5 times, leaving a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 1645.0
Deduct 20 from 23 and we're left with 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 4

Let's proceed to step 5:
4 can be fit into 32 8 times, resulting in a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 16458.0
Subtracting 32 from 32 leaves us with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 4

Advancing to step 6:
If we divide 1 by 4, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 164580.0
Subtracting 0 from 1 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 4 fits into 10 2 times, leaving a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 164580.2
Subtracting 8 from 10 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.

On to step 8:
If we divide 20 by 4, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 164580.25
Deduct 20 from 20 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.

Going ahead to step 9:
4 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: 164580.25
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.

Advancing to step 10:
0 divided by 4 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 164580.25
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.

The quotient of the division is 164580.25, and the remainder is 0.0.