We're dividing 664686 by 3 
Let's see how many times 3 fits into 664686.

Advancing to step 1:
If we divide 6 by 3, we get 2 and a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 6 from 6 leaves us with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 3

Let's proceed 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
If we subtract 6 from 6, we get 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 3

Let's proceed to step 3:
The number 3 fits into 4 1 times, leaving a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
Subtract 3 from 4 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 3

Let's proceed to step 4:
3 goes into 16 5 times with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 2215.0
Subtract 15 from 16 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 3

Going ahead to step 5:
If we divide 18 by 3, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 22156.0
Subtract 18 from 18 to get 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 3

Going ahead to step 6:
When dividing 6 by 3, we get 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 221562.0
If we take 6 away from 6, we end up 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.

Step 7:
3 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 221562.0
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.

On to step 8:
If we divide 0 by 3, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 221562.0
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.

In conclusion, the division gives 221562.0 with a balance of 0.0.