We're dividing 819973 by 12 
The aim is to understand the frequency of 12 in 819973.

Advancing to step 1:
When dividing 8 by 12, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 12

Step 2:
12 can be fit into 81 6 times, resulting in a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 72 from 81 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 12

Advancing to step 3:
12 can be fit into 99 8 times, resulting in a remainder of 3.
The next digit of our result is 8. 
Result so far: 68.0
If we take 96 away from 99, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 12

Let's proceed to step 4:
12 goes into 39 3 times with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 683.0
Deduct 36 from 39 and we're left with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 12

Step 5:
When dividing 37 by 12, we get 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 6833.0
Deduct 36 from 37 and we're left with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 12

Step 6:
If we divide 13 by 12, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 68331.0
If we subtract 12 from 13, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
10 divided by 12 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 68331.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
When dividing 100 by 12, we get 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 68331.08
Subtract 96 from 100 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:
40 divided by 12 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 68331.083
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.

Moving on to step 10:
40 divided by 12 is 3 with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 68331.0833
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.

After the division, we end up with 68331.0833 and a remainder of 4e-05.