We're dividing 784284 by 66 
The aim is to understand the frequency of 66 in 784284.

Moving on to step 1:
The number 66 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 66

Let's proceed to step 2:
The number 66 fits into 78 1 times, leaving a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 12 after subtracting 66 from 78.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 66

Step 3:
When dividing 124 by 66, we get 1 with a remainder of 58.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we take 66 away from 124, we end up with 58.
Include the next digit (2) from the dividend after 58, then repeat: 582 / 66

Going ahead to step 4:
If we divide 582 by 66, we get 8 and a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 118.0
Subtracting 528 from 582 leaves us with 54.
Append the next digit (8) from the dividend to 54 and continue with: 548 / 66

On to step 5:
66 goes into 548 8 times with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 1188.0
Subtracting 528 from 548 leaves us with 20.
Fetch the next digit (4) from the dividend, attach it to 20 and continue: 204 / 66

Step 6:
If we divide 204 by 66, we get 3 and a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 11883.0
Subtracting 198 from 204 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
If we divide 60 by 66, we get 0 and a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 11883.0
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
The number 66 fits into 600 9 times, leaving a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 11883.09
Deduct 594 from 600 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 11883.09
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 10:
The number 66 fits into 600 9 times, leaving a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 11883.0909
Subtract 594 from 600 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 11:
66 can be fit into 60 0 times, resulting in a remainder of 60.
The next digit of our result is 0. 
Result so far: 11883.0909
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 12:
600 divided by 66 is 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 11883.090909
If we take 594 away from 600, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 13:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 11883.090909
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 14:
600 divided by 66 is 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 11883.09090909
Subtracting 594 from 600 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 11883.09090909 with a remainder of 6e-09.