We're dividing 664319 by 12 
We want to figure out the number of times 664319 can be divided by 12.

Let's proceed to 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.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 12

On to step 2:
12 can be fit into 66 5 times, resulting in a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 60 from 66 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 12

Moving on to step 3:
64 divided by 12 is 5 with a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 55.0
Subtract 60 from 64 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 12

Going ahead to step 4:
12 goes into 43 3 times with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 553.0
Subtract 36 from 43 to get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 12

On to step 5:
The number 12 fits into 71 5 times, leaving a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 5535.0
Subtract 60 from 71 to get 11.
Bring next digit (9) of the dividend behind the 11 and repeat the process: 119 / 12

Step 6:
119 divided by 12 is 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 55359.0
If we take 108 away from 119, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
If we divide 110 by 12, we get 9 and a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 55359.9
Subtracting 108 from 110 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.

On to step 8:
20 divided by 12 is 1 with a remainder of 8.
The next digit of our result is 1. 
Result so far: 55359.91
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
The number 12 fits into 80 6 times, leaving a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 55359.916
If we subtract 72 from 80, we 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.

Advancing to step 10:
When dividing 80 by 12, we get 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 55359.9166
If we subtract 72 from 80, we 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.

The quotient of the division is 55359.9166, and the remainder is 8e-05.