We're dividing 817394 by 12 
The aim is to understand the frequency of 12 in 817394.

On to step 1:
12 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 12

Advancing to step 2:
The number 12 fits into 81 6 times, leaving a remainder of 9.
The next digit of our result is 6. 
Result so far: 6.0
If we take 72 away from 81, we end up with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 12

Going ahead to step 3:
If we divide 97 by 12, we get 8 and a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
Subtracting 96 from 97 leaves us with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 12

Let's proceed to step 4:
If we divide 13 by 12, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 681.0
Subtracting 12 from 13 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 12

Moving on to step 5:
When dividing 19 by 12, we get 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 6811.0
Deduct 12 from 19 and we're left with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 12

Let's proceed to step 6:
12 can be fit into 74 6 times, resulting in a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 68116.0
Subtracting 72 from 74 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
If we divide 20 by 12, we get 1 and a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 68116.1
If we subtract 12 from 20, 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.

On to step 8:
80 divided by 12 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 68116.16
Deduct 72 from 80 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.

Moving on to step 9:
80 divided by 12 is 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 68116.166
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.

After the division, we end up with 68116.166 and a remainder of 0.0008.