We're dividing 676638 by 12 
Our goal is to divide 676638 by 12.

On to step 1:
12 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 12

Going ahead to step 2:
12 can be fit into 67 5 times, resulting in a remainder of 7.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 60 from 67 to get 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 12

Going ahead to step 3:
12 goes into 76 6 times with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 56.0
If we take 72 away from 76, we end up with 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 12

Step 4:
12 goes into 46 3 times with a remainder of 10.
The next digit of our result is 3. 
Result so far: 563.0
Subtracting 36 from 46 leaves us with 10.
Append the next digit (3) from the dividend to 10 and continue with: 103 / 12

On to step 5:
12 can be fit into 103 8 times, resulting in a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 5638.0
Subtracting 96 from 103 leaves us with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 12

On to step 6:
12 can be fit into 78 6 times, resulting in a remainder of 6.
The next digit of our result is 6. 
Result so far: 56386.0
Subtracting 72 from 78 leaves us 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.

Going ahead to step 7:
When dividing 60 by 12, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 56386.5
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.

Let's proceed to step 8:
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: 56386.5
Deduct 0 from 0 and we're left 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.

Going ahead to step 9:
0 divided by 12 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 56386.5
If we subtract 0 from 0, 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.

The final result is 56386.5 with a remainder of 0.0.