Let's divide 849729 by 66
The aim is to understand the frequency of 66 in 849729.

On to step 1:
66 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 66

Going ahead to step 2:
The number 66 fits into 84 1 times, leaving a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 66 from 84, we get 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 66

On to step 3:
66 can be fit into 189 2 times, resulting in a remainder of 57.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 132 from 189 and we're left with 57.
Bring next digit (7) of the dividend behind the 57 and repeat the process: 577 / 66

Moving on to step 4:
When dividing 577 by 66, we get 8 with a remainder of 49.
The next digit of our result is 8. 
Result so far: 128.0
Subtracting 528 from 577 leaves us with 49.
Include the next digit (2) from the dividend after 49, then repeat: 492 / 66

Let's proceed to step 5:
66 can be fit into 492 7 times, resulting in a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 1287.0
If we subtract 462 from 492, we get 30.
Append the next digit (9) from the dividend to 30 and continue with: 309 / 66

Advancing to step 6:
The number 66 fits into 309 4 times, leaving a remainder of 45.
Record the quotient 4 as the next digit in the result. 
Result so far: 12874.0
Subtracting 264 from 309 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 7:
450 divided by 66 is 6 with a remainder of 54.
Record the quotient 6 as the next digit in the result. 
Result so far: 12874.6
If we subtract 396 from 450, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 8:
66 can be fit into 540 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 12874.68
If we take 528 away from 540, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
120 divided by 66 is 1 with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 12874.681
If we subtract 66 from 120, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 10:
If we divide 540 by 66, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 12874.6818
Subtracting 528 from 540 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 11:
If we divide 120 by 66, we get 1 and a remainder of 54.
Put 1 as the next digit of the answer. 
Result so far: 12874.68181
The remainder is 54 after subtracting 66 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 12:
When dividing 540 by 66, we get 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 12874.681818
Deduct 528 from 540 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 13:
66 goes into 120 1 times with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 12874.6818181
Subtracting 66 from 120 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 14:
66 goes into 540 8 times with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 12874.68181818
Deduct 528 from 540 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 12874.68181818 with a remaining 1.2e-08.