668876 ÷ 12 
We're looking to find how many times 12 goes into 668876.

Step 1:
12 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 12

Step 2:
When dividing 66 by 12, we get 5 with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 6 after subtracting 60 from 66.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 12

Moving on to step 3:
12 can be fit into 68 5 times, resulting in a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 55.0
The remainder is 8 after subtracting 60 from 68.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 12

Going ahead to step 4:
If we divide 88 by 12, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 557.0
If we subtract 84 from 88, we get 4.
Fetch the next digit (7) from the dividend, attach it to 4 and continue: 47 / 12

Let's proceed to step 5:
When dividing 47 by 12, we get 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 5573.0
Subtracting 36 from 47 leaves us with 11.
Bring next digit (6) of the dividend behind the 11 and repeat the process: 116 / 12

Moving on to step 6:
The number 12 fits into 116 9 times, leaving a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 55739.0
Subtract 108 from 116 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
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: 55739.6
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.

On to step 8:
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: 55739.66
The remainder is 8 after subtracting 72 from 80.
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 55739.66 with a remainder of 0.008.