We look at the division of 48456455 by 12 
Let's see how many times 12 fits into 48456455.

On to step 1:
12 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 12

Let's proceed to step 2:
12 goes into 48 4 times with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 48 from 48 leaves us with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 12

On to step 3:
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: 40.0
If we subtract 0 from 4, we get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 12

Let's proceed to step 4:
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: 403.0
Subtract 36 from 45 to get 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 12

Let's proceed to step 5:
12 can be fit into 96 8 times, resulting in a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 4038.0
Deduct 96 from 96 and we're left with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 12

Let's proceed to step 6:
4 divided by 12 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 40380.0
If we take 0 away from 4, we end up with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 12

Moving on to step 7:
When dividing 45 by 12, we get 3 with a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 403803.0
If we subtract 36 from 45, we get 9.
Include the next digit (5) from the dividend after 9, then repeat: 95 / 12

Going ahead to step 8:
When dividing 95 by 12, we get 7 with a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 4038037.0
If we subtract 84 from 95, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
If we divide 110 by 12, we get 9 and a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 4038037.9
Deduct 108 from 110 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
12 goes into 20 1 times with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 4038037.91
Subtract 12 from 20 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 4038037.916
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
80 divided by 12 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 4038037.9166
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 4038037.9166 with a balance of 8e-05.