We look at the division of 399402 by 6 
Let's see how many times 6 fits into 399402.

Moving on to step 1:
The number 6 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 6

On to step 2:
When dividing 39 by 6, we get 6 with a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 36 from 39 and we're left with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 6

Moving on to step 3:
The number 6 fits into 39 6 times, leaving a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 66.0
Subtract 36 from 39 to get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 6

Let's proceed to step 4:
The number 6 fits into 34 5 times, leaving a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 665.0
If we take 30 away from 34, we end up with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 6

Advancing to step 5:
If we divide 40 by 6, we get 6 and a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 6656.0
The remainder is 4 after subtracting 36 from 40.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 6

Advancing to step 6:
6 goes into 42 7 times with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 66567.0
If we take 42 away from 42, 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.

Going ahead to step 7:
6 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 66567.0
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.

Moving on to step 8:
When dividing 0 by 6, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 66567.0
Subtract 0 from 0 to 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.

In conclusion, the division gives 66567.0 with a balance of 0.0.