We look at the division of 480420 by 9 
The aim is to understand the frequency of 9 in 480420.

Moving on to step 1:
4 divided by 9 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 9

On to step 2:
The number 9 fits into 48 5 times, leaving a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 45 from 48 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 9

Going ahead to step 3:
When dividing 30 by 9, we get 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 53.0
If we take 27 away from 30, we end up with 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 9

Step 4:
9 can be fit into 34 3 times, resulting in a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 533.0
Deduct 27 from 34 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 9

On to step 5:
9 goes into 72 8 times with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 5338.0
If we take 72 away from 72, we end up with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 9

Step 6:
9 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 53380.0
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.

Step 7:
When dividing 0 by 9, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 53380.0
Deduct 0 from 0 and we're left 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 8:
When dividing 0 by 9, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 53380.0
The remainder is 0 after subtracting 0 from 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 53380.0 with a remainder of 0.0.