We look at the division of 612286 by 12 
We're looking to find how many times 12 goes into 612286.

On to step 1:
If we divide 6 by 12, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 12

Step 2:
When dividing 61 by 12, we get 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 60 from 61 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 12

Let's proceed to step 3:
12 can be fit into 12 1 times, resulting in a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
If we take 12 away from 12, we end up with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 12

Let's proceed to step 4:
12 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 510.0
If we subtract 0 from 2, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 12

On to step 5:
12 goes into 28 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 5102.0
The remainder is 4 after subtracting 24 from 28.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 12

Step 6:
46 divided by 12 is 3 with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 51023.0
Deduct 36 from 46 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.

Advancing to step 7:
If we divide 100 by 12, we get 8 and a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 51023.8
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.

Moving on to step 8:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 51023.83
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.

Let's proceed to step 9:
40 divided by 12 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 51023.833
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.

The quotient of the division is 51023.833, and the remainder is 0.0004.