We look at the division of 643068 by 3 
We want to divide 643068 by 3.

Advancing to step 1:
If we divide 6 by 3, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 6 from 6 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Step 2:
If we divide 4 by 3, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
If we subtract 3 from 4, we get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 3

On to step 3:
When dividing 13 by 3, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 214.0
Subtracting 12 from 13 leaves us with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 3

Going ahead to step 4:
3 goes into 10 3 times with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 2143.0
If we subtract 9 from 10, we get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 3

Going ahead to step 5:
When dividing 16 by 3, we get 5 with a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 21435.0
Subtract 15 from 16 to get 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 3

Going ahead to step 6:
3 goes into 18 6 times with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 214356.0
The remainder is 0 after subtracting 18 from 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to 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: 214356.0
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.

Step 8:
0 divided by 3 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 214356.0
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.

The final outcome is 214356.0, with a leftover of 0.0.