We're dividing 551198 by 66 
The aim is to understand the frequency of 66 in 551198.

Advancing to step 1:
When dividing 5 by 66, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 66

Going ahead to step 2:
When dividing 55 by 66, we get 0 with a remainder of 55.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 55 leaves us with 55.
Bring next digit (1) of the dividend behind the 55 and repeat the process: 551 / 66

Moving on to step 3:
If we divide 551 by 66, we get 8 and a remainder of 23.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 528 from 551 and we're left with 23.
Include the next digit (1) from the dividend after 23, then repeat: 231 / 66

Advancing to step 4:
66 goes into 231 3 times with a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
If we take 198 away from 231, we end up with 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 66

Step 5:
66 goes into 339 5 times with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 835.0
Subtract 330 from 339 to get 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 66

On to step 6:
If we divide 98 by 66, we get 1 and a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 8351.0
Subtracting 66 from 98 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.

On to step 7:
If we divide 320 by 66, we get 4 and a remainder of 56.
The next digit of our result is 4. 
Result so far: 8351.4
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.

Going ahead to step 8:
66 can be fit into 560 8 times, resulting in a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 8351.48
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.

On to step 9:
If we divide 320 by 66, we get 4 and a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 8351.484
Deduct 264 from 320 and we're left with 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 10:
66 can be fit into 560 8 times, resulting in a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 8351.4848
If we take 528 away from 560, we end up 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 11:
66 goes into 320 4 times with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 8351.48484
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.

Let's proceed to step 12:
560 divided by 66 is 8 with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 8351.484848
The remainder is 32 after subtracting 528 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 13:
66 goes into 320 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 8351.4848484
Deduct 264 from 320 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 14:
66 goes into 560 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 8351.48484848
If we take 528 away from 560, we end up 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.

Our division results in 8351.48484848 with a remaining 3.2e-08.