We're dividing 480420 by 12 
The aim is to understand the frequency of 12 in 480420.

Going ahead to step 1:
12 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 12

On to step 2:
12 can be fit into 48 4 times, resulting in a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 48 from 48 and we're left with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 12

Advancing to step 3:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Subtracting 0 from 0 leaves us with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 12

Step 4:
12 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 400.0
If we subtract 0 from 4, we get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 12

Moving on to step 5:
When dividing 42 by 12, we get 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 4003.0
Subtracting 36 from 42 leaves us with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 12

Advancing to step 6:
60 divided by 12 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 40035.0
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
When dividing 0 by 12, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 40035.0
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.

Moving on to step 8:
12 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 40035.0
Subtracting 0 from 0 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.

In conclusion, the division gives 40035.0 with a balance of 0.0.