219681 divided by 66 
The aim is to understand the frequency of 66 in 219681.

Moving on to step 1:
The number 66 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 66

Moving on to step 2:
When dividing 21 by 66, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 66

Going ahead to step 3:
If we divide 219 by 66, we get 3 and a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 21 after subtracting 198 from 219.
Fetch the next digit (6) from the dividend, attach it to 21 and continue: 216 / 66

Step 4:
66 goes into 216 3 times with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
Deduct 198 from 216 and we're left with 18.
Append the next digit (8) from the dividend to 18 and continue with: 188 / 66

On to step 5:
The number 66 fits into 188 2 times, leaving a remainder of 56.
The next digit of our result is 2. 
Result so far: 332.0
Subtract 132 from 188 to get 56.
Include the next digit (1) from the dividend after 56, then repeat: 561 / 66

Moving on to step 6:
66 can be fit into 561 8 times, resulting in a remainder of 33.
Record the quotient 8 as the next digit in the result. 
Result so far: 3328.0
Deduct 528 from 561 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 7:
330 divided by 66 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 3328.5
Subtracting 330 from 330 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
If we divide 0 by 66, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3328.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
0 divided by 66 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3328.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 3328.5 with a remaining 0.0.