We look at the division of 54243 by 55 
The aim is to understand the frequency of 55 in 54243.

Going ahead to step 1:
5 divided by 55 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 55

On to step 2:
When dividing 54 by 55, we get 0 with a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Take the next digit (2) from the dividend and append it to 54, then repeat: 542 / 55

Let's proceed to step 3:
542 divided by 55 is 9 with a remainder of 47.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 495 from 542, we get 47.
Fetch the next digit (4) from the dividend, attach it to 47 and continue: 474 / 55

Going ahead to step 4:
474 divided by 55 is 8 with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
Subtract 440 from 474 to get 34.
Take the next digit (3) from the dividend and append it to 34, then repeat: 343 / 55

Advancing to step 5:
The number 55 fits into 343 6 times, leaving a remainder of 13.
Write down 6 as next digit of the result. 
Result so far: 986.0
If we subtract 330 from 343, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 6:
When dividing 130 by 55, we get 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 986.2
If we subtract 110 from 130, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
If we divide 200 by 55, we get 3 and a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 986.23
If we take 165 away from 200, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 8:
55 goes into 350 6 times with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 986.236
The remainder is 20 after subtracting 330 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
200 divided by 55 is 3 with a remainder of 35.
The next digit of our result is 3. 
Result so far: 986.2363
Subtract 165 from 200 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 10:
55 can be fit into 350 6 times, resulting in a remainder of 20.
The next digit of our result is 6. 
Result so far: 986.23636
If we take 330 away from 350, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
200 divided by 55 is 3 with a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 986.236363
The remainder is 35 after subtracting 165 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 12:
If we divide 350 by 55, we get 6 and a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 986.2363636
If we subtract 330 from 350, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 13:
55 can be fit into 200 3 times, resulting in a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 986.23636363
If we take 165 away from 200, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 986.23636363 and a remainder of 3.5e-08.