We're dividing 45480514 by 12 
Our goal is to divide 45480514 by 12.

Moving on to step 1:
The number 12 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 12

On to step 2:
The number 12 fits into 45 3 times, leaving a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 36 from 45 and we're left with 9.
Take the next digit (4) from the dividend and append it to 9, then repeat: 94 / 12

Moving on to step 3:
If we divide 94 by 12, we get 7 and a remainder of 10.
The next digit of our result is 7. 
Result so far: 37.0
Subtract 84 from 94 to get 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 12

Advancing to step 4:
12 goes into 108 9 times with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 379.0
Subtract 108 from 108 to get 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 12

Let's proceed to step 5:
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: 3790.0
Subtract 0 from 0 to get 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 12

Moving on to step 6:
If we divide 5 by 12, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 37900.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 12

Step 7:
12 can be fit into 51 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 379004.0
If we take 48 away from 51, we end up with 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 12

On to step 8:
The number 12 fits into 34 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 3790042.0
Deduct 24 from 34 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
12 can be fit into 100 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 3790042.8
If we take 96 away from 100, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
12 goes into 40 3 times with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 3790042.83
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 11:
12 goes into 40 3 times with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 3790042.833
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 3790042.833 with a balance of 0.0004.