188821 divided by 66 
The aim is to understand the frequency of 66 in 188821.

Moving on to step 1:
When dividing 1 by 66, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 66

Advancing to step 2:
18 divided by 66 is 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 66

Advancing to step 3:
When dividing 188 by 66, we get 2 with a remainder of 56.
The next digit of our result is 2. 
Result so far: 2.0
If we take 132 away from 188, we end up with 56.
Bring next digit (8) of the dividend behind the 56 and repeat the process: 568 / 66

Going ahead to step 4:
66 can be fit into 568 8 times, resulting in a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
If we take 528 away from 568, we end up with 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 66

Advancing to step 5:
If we divide 402 by 66, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 286.0
If we subtract 396 from 402, we get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 66

Going ahead to step 6:
If we divide 61 by 66, we get 0 and a remainder of 61.
Write down 0 as next digit of the result. 
Result so far: 2860.0
The remainder is 61 after subtracting 0 from 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 7:
The number 66 fits into 610 9 times, leaving a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 2860.9
The remainder is 16 after subtracting 594 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 2860.92
Deduct 132 from 160 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
When dividing 280 by 66, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 2860.924
Subtracting 264 from 280 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 10:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 2860.9242
If we subtract 132 from 160, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 11:
66 can be fit into 280 4 times, resulting in a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 2860.92424
Subtract 264 from 280 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 12:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 2860.924242
Deduct 132 from 160 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 13:
The number 66 fits into 280 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 2860.9242424
Subtracting 264 from 280 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
160 divided by 66 is 2 with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 2860.92424242
If we subtract 132 from 160, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 2860.92424242, with a leftover of 2.8e-08.