We're dividing 306956 by 12 
The aim is to understand the frequency of 12 in 306956.

On to step 1:
12 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 12

Going ahead to step 2:
The number 12 fits into 30 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 24 from 30 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 12

Going ahead to step 3:
If we divide 66 by 12, we get 5 and a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Subtract 60 from 66 to get 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 12

Let's proceed to step 4:
12 goes into 69 5 times with a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 255.0
Deduct 60 from 69 and we're left with 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 12

Step 5:
95 divided by 12 is 7 with a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 2557.0
If we take 84 away from 95, we end up with 11.
Bring next digit (6) of the dividend behind the 11 and repeat the process: 116 / 12

Let's proceed to step 6:
12 goes into 116 9 times with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 25579.0
Deduct 108 from 116 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.

Advancing to step 7:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 25579.6
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
12 goes into 80 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 25579.66
If we subtract 72 from 80, we 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.

After the division, we end up with 25579.66 and a remainder of 0.008.