We're dividing 663651 by 3 
We're looking to find how many times 3 goes into 663651.

Advancing to step 1:
3 can be fit into 6 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 6 from 6 leaves us with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 3

On to step 2:
If we divide 6 by 3, we get 2 and a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtracting 6 from 6 leaves us with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 3

On to step 3:
When dividing 3 by 3, we get 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
If we take 3 away from 3, we end up with 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 3

On to step 4:
3 can be fit into 6 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2212.0
Subtracting 6 from 6 leaves us with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 3

On to step 5:
When dividing 5 by 3, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 22121.0
If we subtract 3 from 5, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 3

Moving on to step 6:
If we divide 21 by 3, we get 7 and a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 221217.0
The remainder is 0 after subtracting 21 from 21.
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 7:
If we divide 0 by 3, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 221217.0
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.

On to step 8:
If we divide 0 by 3, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 221217.0
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.

The quotient of the division is 221217.0, and the remainder is 0.0.