Let's divide 367581 by 4
The aim is to understand the frequency of 4 in 367581.

Going ahead to step 1:
When dividing 3 by 4, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 4

Moving on to step 2:
When dividing 36 by 4, we get 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 36 from 36, we get 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 4

Advancing to step 3:
4 can be fit into 7 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we take 4 away from 7, we end up with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 4

Going ahead to step 4:
When dividing 35 by 4, we get 8 with a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 918.0
Subtracting 32 from 35 leaves us with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 4

Step 5:
38 divided by 4 is 9 with a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 9189.0
Deduct 36 from 38 and we're left with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 4

On to step 6:
21 divided by 4 is 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 91895.0
If we subtract 20 from 21, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
4 can be fit into 10 2 times, resulting in a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 91895.2
Subtract 8 from 10 to get 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:
The number 4 fits into 20 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 91895.25
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.

Step 9:
When dividing 0 by 4, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 91895.25
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.

Step 10:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 91895.25
If we subtract 0 from 0, 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.

After the division, we end up with 91895.25 and a remainder of 0.0.