456234 ÷ 66 
The aim is to understand the frequency of 66 in 456234.

Step 1:
4 divided by 66 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 66

Moving on to step 2:
66 can be fit into 45 0 times, resulting in a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Fetch the next digit (6) from the dividend, attach it to 45 and continue: 456 / 66

Going ahead to step 3:
The number 66 fits into 456 6 times, leaving a remainder of 60.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 396 from 456, we get 60.
Include the next digit (2) from the dividend after 60, then repeat: 602 / 66

Step 4:
If we divide 602 by 66, we get 9 and a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 69.0
Subtract 594 from 602 to get 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 66

Moving on to step 5:
66 can be fit into 83 1 times, resulting in a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 691.0
The remainder is 17 after subtracting 66 from 83.
Bring next digit (4) of the dividend behind the 17 and repeat the process: 174 / 66

Moving on to step 6:
If we divide 174 by 66, we get 2 and a remainder of 42.
Use 2 as the next digit of our solution. 
Result so far: 6912.0
If we take 132 away from 174, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
66 can be fit into 420 6 times, resulting in a remainder of 24.
The next digit of our result is 6. 
Result so far: 6912.6
If we subtract 396 from 420, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
The number 66 fits into 240 3 times, leaving a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 6912.63
Deduct 198 from 240 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 9:
66 goes into 420 6 times with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 6912.636
Subtracting 396 from 420 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 10:
If we divide 240 by 66, we get 3 and a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 6912.6363
Deduct 198 from 240 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 11:
If we divide 420 by 66, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 6912.63636
Subtracting 396 from 420 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 12:
When dividing 240 by 66, we get 3 with a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 6912.636363
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 13:
66 goes into 420 6 times with a remainder of 24.
The next digit of our result is 6. 
Result so far: 6912.6363636
Deduct 396 from 420 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
66 can be fit into 240 3 times, resulting in a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 6912.63636363
If we subtract 198 from 240, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

In conclusion, the division gives 6912.63636363 with a balance of 4.2e-08.