1231192 ÷ 12 
The aim is to understand the frequency of 12 in 1231192.

Step 1:
If we divide 1 by 12, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 12

Moving on to step 2:
If we divide 12 by 12, we get 1 and a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 12 from 12, we get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 12

Step 3:
If we divide 3 by 12, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 12

Moving on to step 4:
31 divided by 12 is 2 with a remainder of 7.
The next digit of our result is 2. 
Result so far: 102.0
If we subtract 24 from 31, we get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 12

On to step 5:
12 goes into 71 5 times with a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 1025.0
Deduct 60 from 71 and we're left with 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 12

Let's proceed to step 6:
The number 12 fits into 119 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 10259.0
The remainder is 11 after subtracting 108 from 119.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 12

Going ahead to step 7:
12 can be fit into 112 9 times, resulting in a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 102599.0
Subtract 108 from 112 to 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.

Let's proceed to step 8:
12 goes into 40 3 times with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 102599.3
Subtract 36 from 40 to 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.

Let's proceed to step 9:
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: 102599.33
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.

After the division, we end up with 102599.33 and a remainder of 0.004.