We look at the division of 40756 by 12 
The aim is to understand the frequency of 12 in 40756.

Step 1:
12 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 12

Step 2:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 36 from 40 and we're left with 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 12

Step 3:
12 goes into 47 3 times with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 33.0
If we take 36 away from 47, we end up with 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 12

Advancing to step 4:
115 divided by 12 is 9 with a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 339.0
Subtract 108 from 115 to get 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 12

Moving on to step 5:
When dividing 76 by 12, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 3396.0
Subtracting 72 from 76 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 6:
40 divided by 12 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 3396.3
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
If we divide 40 by 12, we get 3 and a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3396.33
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 3396.33 with a remainder of 0.004.