We look at the division of 307756 by 66 
The aim is to understand the frequency of 66 in 307756.

Advancing to step 1:
When dividing 3 by 66, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 66

Let's proceed to step 2:
The number 66 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Bring next digit (7) of the dividend behind the 30 and repeat the process: 307 / 66

Moving on to step 3:
If we divide 307 by 66, we get 4 and a remainder of 43.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 264 away from 307, we end up with 43.
Grab the next digit (7) from the dividend, add it to 43, then carry on: 437 / 66

Going ahead to step 4:
66 can be fit into 437 6 times, resulting in a remainder of 41.
Write down 6 as next digit of the result. 
Result so far: 46.0
The remainder is 41 after subtracting 396 from 437.
Bring next digit (5) of the dividend behind the 41 and repeat the process: 415 / 66

On to step 5:
When dividing 415 by 66, we get 6 with a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 466.0
If we take 396 away from 415, we end up with 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 66

Step 6:
When dividing 196 by 66, we get 2 with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 4662.0
Subtracting 132 from 196 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 7:
66 goes into 640 9 times with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 4662.9
Subtracting 594 from 640 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 8:
66 can be fit into 460 6 times, resulting in a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 4662.96
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 9:
640 divided by 66 is 9 with a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 4662.969
Subtracting 594 from 640 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 10:
The number 66 fits into 460 6 times, leaving a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 4662.9696
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 11:
66 can be fit into 640 9 times, resulting in a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 4662.96969
Deduct 594 from 640 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 12:
If we divide 460 by 66, we get 6 and a remainder of 64.
The next digit of our result is 6. 
Result so far: 4662.969696
Subtracting 396 from 460 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 13:
If we divide 640 by 66, we get 9 and a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 4662.9696969
Subtracting 594 from 640 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 14:
66 goes into 460 6 times with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 4662.96969696
If we subtract 396 from 460, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

In conclusion, the division gives 4662.96969696 with a balance of 6.4e-08.