435504 divided by 12 
The aim is to understand the frequency of 12 in 435504.

Let's proceed to step 1:
When dividing 4 by 12, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 12

Step 2:
43 divided by 12 is 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 36 from 43, we get 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 12

Moving on to step 3:
If we divide 75 by 12, we get 6 and a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 36.0
If we subtract 72 from 75, we get 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 12

On to step 4:
12 can be fit into 35 2 times, resulting in a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 362.0
If we subtract 24 from 35, we get 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 12

On to step 5:
When dividing 110 by 12, we get 9 with a remainder of 2.
The next digit of our result is 9. 
Result so far: 3629.0
Deduct 108 from 110 and we're left with 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 12

Step 6:
24 divided by 12 is 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 36292.0
Subtract 24 from 24 to 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.

On to step 7:
When dividing 0 by 12, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 36292.0
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.

Going ahead to step 8:
The number 12 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 36292.0
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.

The final outcome is 36292.0, with a leftover of 0.0.