We look at the division of 552575 by 66 
The aim is to understand the frequency of 66 in 552575.

Step 1:
66 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 66

Going ahead to step 2:
66 can be fit into 55 0 times, resulting in a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Append the next digit (2) from the dividend to 55 and continue with: 552 / 66

Let's proceed to step 3:
The number 66 fits into 552 8 times, leaving a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we subtract 528 from 552, we get 24.
Bring next digit (5) of the dividend behind the 24 and repeat the process: 245 / 66

Going ahead to step 4:
The number 66 fits into 245 3 times, leaving a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 83.0
The remainder is 47 after subtracting 198 from 245.
Include the next digit (7) from the dividend after 47, then repeat: 477 / 66

Advancing to step 5:
66 goes into 477 7 times with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 837.0
The remainder is 15 after subtracting 462 from 477.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 66

Let's proceed to step 6:
If we divide 155 by 66, we get 2 and a remainder of 23.
Use 2 as the next digit of our solution. 
Result so far: 8372.0
If we take 132 away from 155, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 7:
230 divided by 66 is 3 with a remainder of 32.
The next digit of our result is 3. 
Result so far: 8372.3
If we subtract 198 from 230, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 8:
The number 66 fits into 320 4 times, leaving a remainder of 56.
The next digit of our result is 4. 
Result so far: 8372.34
If we subtract 264 from 320, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 9:
The number 66 fits into 560 8 times, leaving a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 8372.348
Deduct 528 from 560 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 10:
66 goes into 320 4 times with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 8372.3484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
66 can be fit into 560 8 times, resulting in a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 8372.34848
Subtracting 528 from 560 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 12:
66 can be fit into 320 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 8372.348484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 13:
560 divided by 66 is 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 8372.3484848
Subtracting 528 from 560 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 14:
66 can be fit into 320 4 times, resulting in a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 8372.34848484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final outcome is 8372.34848484, with a leftover of 5.6e-08.