Let's divide 403207 by 12
The aim is to understand the frequency of 12 in 403207.

Moving on to step 1:
4 divided by 12 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 12

Moving on to step 2:
If we divide 40 by 12, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 36 from 40 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 12

Let's proceed to step 3:
The number 12 fits into 43 3 times, leaving a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtracting 36 from 43 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 12

Moving on to step 4:
72 divided by 12 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 336.0
Subtracting 72 from 72 leaves us with 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 12

Moving on to step 5:
The number 12 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3360.0
If we take 0 away from 0, we end up with 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 12

Moving on to step 6:
When dividing 7 by 12, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 33600.0
If we take 0 away from 7, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
12 can be fit into 70 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 33600.5
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.

Advancing to step 8:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 33600.58
Subtracting 96 from 100 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.

Advancing to step 9:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 33600.583
If we take 36 away from 40, we end up 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.

Advancing to step 10:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 33600.5833
If we take 36 away from 40, we end up 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.

After the division, we end up with 33600.5833 and a remainder of 4e-05.