We're dividing 541196 by 12 
The aim is to understand the frequency of 12 in 541196.

On to step 1:
The number 12 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 12

Moving on to step 2:
When dividing 54 by 12, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 48 from 54, we get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 12

On to step 3:
The number 12 fits into 61 5 times, leaving a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 45.0
If we subtract 60 from 61, we get 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 12

Step 4:
If we divide 11 by 12, we get 0 and a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 450.0
If we subtract 0 from 11, we get 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 12

On to step 5:
When dividing 119 by 12, we get 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 4509.0
If we subtract 108 from 119, we get 11.
Take the next digit (6) from the dividend and append it to 11, then repeat: 116 / 12

Advancing to step 6:
When dividing 116 by 12, we get 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 45099.0
Subtracting 108 from 116 leaves us 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.

On to step 7:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 45099.6
If we take 72 away from 80, we end up 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.

On to step 8:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 45099.66
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.

The final outcome is 45099.66, with a leftover of 0.008.