428652 divided by 66 
The aim is to understand the frequency of 66 in 428652.

On to step 1:
When dividing 4 by 66, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 66

Step 2:
66 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 66

Let's proceed to step 3:
When dividing 428 by 66, we get 6 with a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 32 after subtracting 396 from 428.
Bring next digit (6) of the dividend behind the 32 and repeat the process: 326 / 66

Going ahead to step 4:
The number 66 fits into 326 4 times, leaving a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 64.0
Subtracting 264 from 326 leaves us with 62.
Fetch the next digit (5) from the dividend, attach it to 62 and continue: 625 / 66

Moving on to step 5:
66 goes into 625 9 times with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 649.0
The remainder is 31 after subtracting 594 from 625.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 66

Advancing to step 6:
If we divide 312 by 66, we get 4 and a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 6494.0
If we take 264 away from 312, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 7:
The number 66 fits into 480 7 times, leaving a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 6494.7
If we subtract 462 from 480, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
When dividing 180 by 66, we get 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 6494.72
The remainder is 48 after subtracting 132 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 9:
When dividing 480 by 66, we get 7 with a remainder of 18.
Put 7 as the next digit of the answer. 
Result so far: 6494.727
If we subtract 462 from 480, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
When dividing 180 by 66, we get 2 with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 6494.7272
Subtracting 132 from 180 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
If we divide 480 by 66, we get 7 and a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 6494.72727
If we subtract 462 from 480, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 12:
The number 66 fits into 180 2 times, leaving a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 6494.727272
If we take 132 away from 180, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 13:
The number 66 fits into 480 7 times, leaving a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 6494.7272727
The remainder is 18 after subtracting 462 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 14:
66 goes into 180 2 times with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 6494.72727272
The remainder is 48 after subtracting 132 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 6494.72727272 with a remainder of 4.8e-08.