398333 divided by 12 
The aim is to understand the frequency of 12 in 398333.

Advancing to step 1:
The number 12 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 12

Moving on to step 2:
When dividing 39 by 12, we get 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 36 from 39 to get 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 12

Let's proceed to step 3:
When dividing 38 by 12, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 33.0
If we take 36 away from 38, we end up with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 12

Moving on to step 4:
When dividing 23 by 12, we get 1 with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 331.0
Deduct 12 from 23 and we're left with 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 12

Advancing to step 5:
When dividing 113 by 12, we get 9 with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 3319.0
If we subtract 108 from 113, we get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 12

Moving on to step 6:
53 divided by 12 is 4 with a remainder of 5.
The next digit of our result is 4. 
Result so far: 33194.0
The remainder is 5 after subtracting 48 from 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
50 divided by 12 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 33194.4
Deduct 48 from 50 and we're left 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.

Step 8:
When dividing 20 by 12, we get 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 33194.41
Subtracting 12 from 20 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.

Advancing to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 33194.416
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 10:
If we divide 80 by 12, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 33194.4166
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.

In conclusion, the division gives 33194.4166 with a balance of 8e-05.