We look at the division of 72553 by 4 
The aim is to understand the frequency of 4 in 72553.

Let's proceed to step 1:
When dividing 7 by 4, we get 1 with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 4 from 7 to get 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 4

Moving on to step 2:
If we divide 32 by 4, we get 8 and a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 32 from 32 and we're left with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 4

Moving on to step 3:
The number 4 fits into 5 1 times, leaving a remainder of 1.
The next digit of our result is 1. 
Result so far: 181.0
Deduct 4 from 5 and we're left with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 4

Moving on to step 4:
15 divided by 4 is 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 1813.0
If we subtract 12 from 15, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 4

Let's proceed to step 5:
4 can be fit into 33 8 times, resulting in a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 18138.0
If we subtract 32 from 33, 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.

Moving on to step 6:
4 can be fit into 10 2 times, resulting in a remainder of 2.
The next digit of our result is 2. 
Result so far: 18138.2
The remainder is 2 after subtracting 8 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
4 goes into 20 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 18138.25
Subtract 20 from 20 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 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: 18138.25
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.

Advancing to step 9:
0 divided by 4 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 18138.25
If we take 0 away from 0, we end up 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 18138.25, and the remainder is 0.0.