We're dividing 550419 by 12 
We're looking to find how many times 12 goes into 550419.

Going ahead to step 1:
12 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 12

Going ahead to step 2:
The number 12 fits into 55 4 times, leaving a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 7 after subtracting 48 from 55.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 12

On to step 3:
When dividing 70 by 12, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we subtract 60 from 70, we get 10.
Include the next digit (4) from the dividend after 10, then repeat: 104 / 12

Going ahead to step 4:
The number 12 fits into 104 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 458.0
Subtracting 96 from 104 leaves us with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 12

Let's proceed to step 5:
If we divide 81 by 12, we get 6 and a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 4586.0
Subtract 72 from 81 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 12

Going ahead to step 6:
99 divided by 12 is 8 with a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 45868.0
If we subtract 96 from 99, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
30 divided by 12 is 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 45868.2
If we take 24 away from 30, 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 8:
If we divide 60 by 12, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 45868.25
If we subtract 60 from 60, 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.

Going ahead to step 9:
When dividing 0 by 12, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 45868.25
If we take 0 away from 0, 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.

Advancing to step 10:
0 divided by 12 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 45868.25
If we take 0 away from 0, 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.

The final result is 45868.25 with a remainder of 0.0.