We're dividing 640616 by 3 
We're looking to find how many times 3 goes into 640616.

Advancing to step 1:
The number 3 fits into 6 2 times, leaving a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 6 from 6 to get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 3

Moving on to step 2:
If we divide 4 by 3, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
If we take 3 away from 4, we end up with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 3

Let's proceed to step 3:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 213.0
If we subtract 9 from 10, we get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 3

On to step 4:
When dividing 16 by 3, we get 5 with a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 2135.0
Deduct 15 from 16 and we're left with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

Moving on to step 5:
If we divide 11 by 3, we get 3 and a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 21353.0
Subtract 9 from 11 to get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 3

Advancing to step 6:
When dividing 26 by 3, we get 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 213538.0
If we subtract 24 from 26, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
If we divide 20 by 3, we get 6 and a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 213538.6
Subtract 18 from 20 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
20 divided by 3 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 213538.66
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 213538.66, with a leftover of 0.002.