Let's divide 346209 by 12
The aim is to understand the frequency of 12 in 346209.

Moving on to step 1:
12 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 12

Step 2:
12 goes into 34 2 times with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 24 from 34 leaves us with 10.
Append the next digit (6) from the dividend to 10 and continue with: 106 / 12

Let's proceed to step 3:
If we divide 106 by 12, we get 8 and a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 28.0
If we take 96 away from 106, we end up with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 12

Step 4:
When dividing 102 by 12, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 288.0
If we subtract 96 from 102, we get 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 12

Moving on to step 5:
If we divide 60 by 12, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 2885.0
Deduct 60 from 60 and we're left with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 12

Let's proceed to step 6:
If we divide 9 by 12, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 28850.0
The remainder is 9 after subtracting 0 from 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
The number 12 fits into 90 7 times, leaving a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 28850.7
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
12 goes into 60 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 28850.75
Subtracting 60 from 60 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
If we divide 0 by 12, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 28850.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 28850.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 28850.75 with a remainder of 0.0.