480690 ÷ 12 
Our goal is to divide 480690 by 12.

Going ahead to step 1:
12 can be fit into 4 0 times, resulting in 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.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 12

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
If we take 48 away from 48, we end up with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 12

Let's proceed to step 3:
0 divided by 12 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40.0
The remainder is 0 after subtracting 0 from 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 12

Let's proceed to step 4:
12 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 400.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 12

Step 5:
12 goes into 69 5 times with a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 4005.0
The remainder is 9 after subtracting 60 from 69.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 12

Going ahead to step 6:
90 divided by 12 is 7 with a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 40057.0
If we take 84 away from 90, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
If we divide 60 by 12, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 40057.5
If we take 60 away from 60, 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.

Step 8:
When dividing 0 by 12, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 40057.5
Subtract 0 from 0 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 9:
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: 40057.5
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 40057.5, with a leftover of 0.0.