We look at the division of 645761 by 55 
The aim is to understand the frequency of 55 in 645761.

Advancing to step 1:
If we divide 6 by 55, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 55

Step 2:
When dividing 64 by 55, we get 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 55 from 64 to get 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 55

Moving on to step 3:
55 can be fit into 95 1 times, resulting in a remainder of 40.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 55 from 95 leaves us with 40.
Bring next digit (7) of the dividend behind the 40 and repeat the process: 407 / 55

Advancing to step 4:
55 can be fit into 407 7 times, resulting in a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 117.0
The remainder is 22 after subtracting 385 from 407.
Fetch the next digit (6) from the dividend, attach it to 22 and continue: 226 / 55

On to step 5:
When dividing 226 by 55, we get 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 1174.0
Deduct 220 from 226 and we're left with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 55

Moving on to step 6:
55 goes into 61 1 times with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 11741.0
The remainder is 6 after subtracting 55 from 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
60 divided by 55 is 1 with a remainder of 5.
The next digit of our result is 1. 
Result so far: 11741.1
If we subtract 55 from 60, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
The number 55 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 11741.1
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
The number 55 fits into 500 9 times, leaving a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 11741.109
Deduct 495 from 500 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 10:
55 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 11741.109
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
If we divide 500 by 55, we get 9 and a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 11741.10909
If we subtract 495 from 500, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
When dividing 50 by 55, we get 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 11741.10909
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 13:
If we divide 500 by 55, we get 9 and a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 11741.1090909
Subtract 495 from 500 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
50 divided by 55 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 11741.1090909
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 11741.1090909, with a leftover of 5e-08.