Let's divide 480309 by 12
We want to divide 480309 by 12.

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
If we subtract 0 from 4, we get 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 12

Let's proceed to step 2:
48 divided by 12 is 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 48 from 48, we get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 12

Let's proceed to step 3:
12 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 0, we end up with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 12

Advancing to step 4:
When dividing 3 by 12, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 400.0
Subtract 0 from 3 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 12

On to step 5:
12 goes into 30 2 times with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 4002.0
Deduct 24 from 30 and we're left with 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 12

Advancing to step 6:
When dividing 69 by 12, we get 5 with a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 40025.0
If we subtract 60 from 69, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
90 divided by 12 is 7 with a remainder of 6.
The next digit of our result is 7. 
Result so far: 40025.7
Subtract 84 from 90 to 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:
If we divide 60 by 12, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 40025.75
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.

Going ahead to step 9:
0 divided by 12 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40025.75
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.

Advancing to step 10:
0 divided by 12 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40025.75
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.

In conclusion, the division gives 40025.75 with a balance of 0.0.