We divide 663369 by 2
We want to figure out the number of times 663369 can be divided by 2.

Step 1:
When dividing 6 by 2, we get 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 6 away from 6, we end up with 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 2

Moving on to step 2:
If we divide 6 by 2, we get 3 and a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 33.0
Subtracting 6 from 6 leaves us with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 2

On to step 3:
The number 2 fits into 3 1 times, leaving a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 331.0
If we take 2 away from 3, we end up with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 2

Going ahead to step 4:
When dividing 13 by 2, we get 6 with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 3316.0
The remainder is 1 after subtracting 12 from 13.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 2

Let's proceed to step 5:
16 divided by 2 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 33168.0
Subtracting 16 from 16 leaves us with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 2

Advancing to step 6:
2 goes into 9 4 times with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 331684.0
The remainder is 1 after subtracting 8 from 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
If we divide 10 by 2, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 331684.5
Subtract 10 from 10 to 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:
2 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 331684.5
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.

Moving on to step 9:
0 divided by 2 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 331684.5
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.

After the division, we end up with 331684.5 and a remainder of 0.0.