Let's divide 426566 by 12
The aim is to understand the frequency of 12 in 426566.

Advancing to step 1:
The number 12 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 12

Moving on to step 2:
42 divided by 12 is 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 6 after subtracting 36 from 42.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 12

Let's proceed to step 3:
When dividing 66 by 12, we get 5 with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
Subtract 60 from 66 to get 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 12

Moving on to step 4:
If we divide 65 by 12, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 355.0
The remainder is 5 after subtracting 60 from 65.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 12

Step 5:
The number 12 fits into 56 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 3554.0
If we subtract 48 from 56, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 12

On to step 6:
The number 12 fits into 86 7 times, leaving a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 35547.0
Subtracting 84 from 86 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
If we divide 20 by 12, we get 1 and a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 35547.1
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
12 goes into 80 6 times with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 35547.16
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
12 can be fit into 80 6 times, resulting in a remainder of 8.
The next digit of our result is 6. 
Result so far: 35547.166
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 35547.166 with a balance of 0.0008.