645152 ÷ 55 
The aim is to understand the frequency of 55 in 645152.

Advancing to step 1:
55 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 55

Advancing to step 2:
If we divide 64 by 55, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 55 from 64 leaves us with 9.
Include the next digit (5) from the dividend after 9, then repeat: 95 / 55

Step 3:
If we divide 95 by 55, we get 1 and a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 40 after subtracting 55 from 95.
Append the next digit (1) from the dividend to 40 and continue with: 401 / 55

On to step 4:
401 divided by 55 is 7 with a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 117.0
Subtracting 385 from 401 leaves us with 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 55

Step 5:
The number 55 fits into 165 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 1173.0
Subtracting 165 from 165 leaves us with 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 55

Moving on to step 6:
The number 55 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 11730.0
Deduct 0 from 2 and we're left 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.

Advancing to step 7:
20 divided by 55 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 11730.0
Subtract 0 from 20 to 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.

Going ahead to step 8:
If we divide 200 by 55, we get 3 and a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 11730.03
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.

On to step 9:
If we divide 350 by 55, we get 6 and a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 11730.036
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.

Advancing to step 10:
The number 55 fits into 200 3 times, leaving a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 11730.0363
If we subtract 165 from 200, we 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 11:
The number 55 fits into 350 6 times, leaving a remainder of 20.
The next digit of our result is 6. 
Result so far: 11730.03636
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.

Going ahead to step 12:
55 can be fit into 200 3 times, resulting in a remainder of 35.
The next digit of our result is 3. 
Result so far: 11730.036363
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.

Step 13:
350 divided by 55 is 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 11730.0363636
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.

Let's proceed to step 14:
If we divide 200 by 55, we get 3 and a remainder of 35.
The next digit of our result is 3. 
Result so far: 11730.03636363
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.

The final result is 11730.03636363 with a remainder of 3.5e-08.