548419 ÷ 12 
Our goal is to divide 548419 by 12.

Going ahead to step 1:
5 divided by 12 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 12

On to step 2:
12 can be fit into 54 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 6 after subtracting 48 from 54.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 12

Step 3:
12 goes into 68 5 times with a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
The remainder is 8 after subtracting 60 from 68.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 12

Going ahead to step 4:
If we divide 84 by 12, we get 7 and a remainder of 0.
The next digit of our result is 7. 
Result so far: 457.0
If we subtract 84 from 84, we get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 12

Step 5:
12 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 4570.0
If we take 0 away from 1, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 12

On to step 6:
When dividing 19 by 12, we get 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 45701.0
If we take 12 away from 19, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 12, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 45701.5
If we take 60 away from 70, we end up 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 8:
If we divide 100 by 12, we get 8 and a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 45701.58
Deduct 96 from 100 and we're left 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 9:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 45701.583
If we subtract 36 from 40, we 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.

Going ahead to step 10:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 45701.5833
If we subtract 36 from 40, we 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.

Our division results in 45701.5833 with a remaining 4e-05.