Let's divide 255609 by 54
The aim is to understand the frequency of 54 in 255609.

On to step 1:
54 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 54

On to step 2:
54 can be fit into 25 0 times, resulting in a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Take the next digit (5) from the dividend and append it to 25, then repeat: 255 / 54

Advancing to step 3:
If we divide 255 by 54, we get 4 and a remainder of 39.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 39 after subtracting 216 from 255.
Append the next digit (6) from the dividend to 39 and continue with: 396 / 54

Going ahead to step 4:
The number 54 fits into 396 7 times, leaving a remainder of 18.
Put 7 as the next digit of the answer. 
Result so far: 47.0
The remainder is 18 after subtracting 378 from 396.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 54

Going ahead to step 5:
If we divide 180 by 54, we get 3 and a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 473.0
If we take 162 away from 180, we end up with 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 54

Step 6:
If we divide 189 by 54, we get 3 and a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 4733.0
The remainder is 27 after subtracting 162 from 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
54 can be fit into 270 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4733.5
Subtract 270 from 270 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 8:
54 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4733.5
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.

Let's proceed to step 9:
54 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4733.5
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 final result is 4733.5 with a remainder of 0.0.