We're dividing 486113 by 12 
We want to divide 486113 by 12.

Advancing to step 1:
When dividing 4 by 12, we get 0 with 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.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 12

Moving on to step 2:
When dividing 48 by 12, we get 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 48 from 48 and we're left with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 12

Moving on to step 3:
12 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 40.0
If we subtract 0 from 6, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 12

Going ahead to step 4:
When dividing 61 by 12, we get 5 with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 405.0
Subtracting 60 from 61 leaves us with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 12

Step 5:
The number 12 fits into 11 0 times, leaving a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 4050.0
Subtracting 0 from 11 leaves us with 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 12

On to step 6:
113 divided by 12 is 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 40509.0
Subtract 108 from 113 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
50 divided by 12 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 40509.4
Subtracting 48 from 50 leaves us 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.

Going ahead to step 8:
When dividing 20 by 12, we get 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 40509.41
If we take 12 away from 20, 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.

On to step 9:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 40509.416
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.

Moving on to step 10:
If we divide 80 by 12, we get 6 and a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 40509.4166
Deduct 72 from 80 and we're left 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.

The final result is 40509.4166 with a remainder of 8e-05.