867391 ÷ 12 
The aim is to understand the frequency of 12 in 867391.

On to step 1:
12 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 12

Let's proceed to step 2:
12 goes into 86 7 times with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 84 away from 86, we end up with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 12

Let's proceed to step 3:
27 divided by 12 is 2 with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 72.0
Deduct 24 from 27 and we're left with 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 12

Advancing to step 4:
12 goes into 33 2 times with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 722.0
If we take 24 away from 33, we end up with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 12

Step 5:
99 divided by 12 is 8 with a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 7228.0
If we take 96 away from 99, we end up with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 12

Moving on to step 6:
The number 12 fits into 31 2 times, leaving a remainder of 7.
The next digit of our result is 2. 
Result so far: 72282.0
Subtract 24 from 31 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
When dividing 70 by 12, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 72282.5
Subtracting 60 from 70 leaves us 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.

Let's proceed to step 8:
12 goes into 100 8 times with a remainder of 4.
The next digit of our result is 8. 
Result so far: 72282.58
Deduct 96 from 100 and we're left 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.

On to step 9:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 72282.583
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.

Moving on to step 10:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 72282.5833
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 72282.5833 with a remainder of 4e-05.