665020 ÷ 3 
We're looking to find how many times 3 goes into 665020.

Advancing to step 1:
3 goes into 6 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 6 from 6 to get 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 3

Moving on to step 2:
6 divided by 3 is 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 6 from 6 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 3

Advancing to step 3:
3 goes into 5 1 times with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
The remainder is 2 after subtracting 3 from 5.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 3

Let's proceed to step 4:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 2216.0
Deduct 18 from 20 and we're left with 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 3

On to step 5:
When dividing 22 by 3, we get 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 22167.0
Deduct 21 from 22 and we're left with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 3

Advancing to step 6:
If we divide 10 by 3, we get 3 and a remainder of 1.
The next digit of our result is 3. 
Result so far: 221673.0
If we subtract 9 from 10, we get 1.
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:
When dividing 10 by 3, we get 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 221673.3
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 221673.33
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 221673.33, with a leftover of 0.001.