We divide 663597 by 12
We want to figure out the number of times 663597 can be divided by 12.

Moving on to step 1:
The number 12 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 12

On to step 2:
If we divide 66 by 12, we get 5 and 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.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 12

On to step 3:
63 divided by 12 is 5 with a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 55.0
The remainder is 3 after subtracting 60 from 63.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 12

Going ahead to step 4:
If we divide 35 by 12, we get 2 and a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 552.0
The remainder is 11 after subtracting 24 from 35.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 12

Let's proceed to step 5:
When dividing 119 by 12, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 5529.0
Subtract 108 from 119 to get 11.
Append the next digit (7) from the dividend to 11 and continue with: 117 / 12

Advancing to step 6:
When dividing 117 by 12, we get 9 with a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 55299.0
Subtract 108 from 117 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
The number 12 fits into 90 7 times, leaving a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 55299.7
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
12 goes into 60 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 55299.75
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
The number 12 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 55299.75
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
0 divided by 12 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 55299.75
Subtracting 0 from 0 leaves us 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.

Our division results in 55299.75 with a remaining 0.0.