24122321 ÷ 66 
The aim is to understand the frequency of 66 in 24122321.

Advancing to step 1:
66 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 66

Step 2:
When dividing 24 by 66, we get 0 with a remainder of 24.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 24, we get 24.
Append the next digit (1) from the dividend to 24 and continue with: 241 / 66

Let's proceed to step 3:
The number 66 fits into 241 3 times, leaving a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 43 after subtracting 198 from 241.
Grab the next digit (2) from the dividend, add it to 43, then carry on: 432 / 66

Advancing to step 4:
The number 66 fits into 432 6 times, leaving a remainder of 36.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
Deduct 396 from 432 and we're left with 36.
Include the next digit (2) from the dividend after 36, then repeat: 362 / 66

Step 5:
66 can be fit into 362 5 times, resulting in a remainder of 32.
Use 5 as the next digit of our solution. 
Result so far: 365.0
The remainder is 32 after subtracting 330 from 362.
Append the next digit (3) from the dividend to 32 and continue with: 323 / 66

Moving on to step 6:
66 goes into 323 4 times with a remainder of 59.
Put 4 as the next digit of the answer. 
Result so far: 3654.0
The remainder is 59 after subtracting 264 from 323.
Fetch the next digit (2) from the dividend, attach it to 59 and continue: 592 / 66

On to step 7:
If we divide 592 by 66, we get 8 and a remainder of 64.
The number 8 becomes the next digit in our result. 
Result so far: 36548.0
Deduct 528 from 592 and we're left with 64.
Fetch the next digit (1) from the dividend, attach it to 64 and continue: 641 / 66

On to step 8:
641 divided by 66 is 9 with a remainder of 47.
The next digit of our result is 9. 
Result so far: 365489.0
The remainder is 47 after subtracting 594 from 641.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 9:
470 divided by 66 is 7 with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 365489.7
The remainder is 8 after subtracting 462 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
When dividing 80 by 66, we get 1 with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 365489.71
If we subtract 66 from 80, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 11:
66 can be fit into 140 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 365489.712
The remainder is 8 after subtracting 132 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
If we divide 80 by 66, we get 1 and a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 365489.7121
Subtract 66 from 80 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
66 goes into 140 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 365489.71212
The remainder is 8 after subtracting 132 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 14:
When dividing 80 by 66, we get 1 with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 365489.712121
Subtracting 66 from 80 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 15:
When dividing 140 by 66, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 365489.7121212
Subtracting 132 from 140 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 16:
66 goes into 80 1 times with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 365489.71212121
Subtracting 66 from 80 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 365489.71212121, with a leftover of 1.4e-08.