We look at the division of 408708 by 3 
We want to divide 408708 by 3.

Step 1:
If we divide 4 by 3, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 3 from 4, we get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 3

On to step 2:
The number 3 fits into 10 3 times, leaving a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 9 from 10 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 3

Going ahead to step 3:
3 goes into 18 6 times with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 136.0
If we take 18 away from 18, we end up with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 3

On to step 4:
7 divided by 3 is 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 1362.0
The remainder is 1 after subtracting 6 from 7.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 3

Advancing to step 5:
When dividing 10 by 3, we get 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 13623.0
Subtracting 9 from 10 leaves us with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 3

On to step 6:
3 can be fit into 18 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 136236.0
If we subtract 18 from 18, 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 7:
When dividing 0 by 3, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 136236.0
The remainder is 0 after subtracting 0 from 0.
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 8:
3 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 136236.0
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.

After the division, we end up with 136236.0 and a remainder of 0.0.