We look at the division of 504282 by 12 
We're looking to find how many times 12 goes into 504282.

Advancing to step 1:
12 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 12

Let's proceed to step 2:
The number 12 fits into 50 4 times, leaving a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 2 after subtracting 48 from 50.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 12

Step 3:
If we divide 24 by 12, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 24 from 24 and we're left with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 12

On to step 4:
12 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 420.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 12

Step 5:
The number 12 fits into 28 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 4202.0
Subtract 24 from 28 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 12

Step 6:
When dividing 42 by 12, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 42023.0
Subtract 36 from 42 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.

On to step 7:
12 goes into 60 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 42023.5
Subtract 60 from 60 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.

Advancing to step 8:
When dividing 0 by 12, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42023.5
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 9:
0 divided by 12 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 42023.5
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 outcome is 42023.5, with a leftover of 0.0.