We look at the division of 210904 by 6 
Our goal is to divide 210904 by 6.

Step 1:
If we divide 2 by 6, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 6

On to step 2:
6 goes into 21 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 18 from 21 to get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 6

Let's proceed to step 3:
When dividing 30 by 6, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 35.0
If we subtract 30 from 30, we get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 6

On to step 4:
6 goes into 9 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 351.0
If we subtract 6 from 9, we get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 6

Advancing to step 5:
If we divide 30 by 6, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 3515.0
If we take 30 away from 30, we end up with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 6

Let's proceed to step 6:
When dividing 4 by 6, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 35150.0
If we take 0 away from 4, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
6 can be fit into 40 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 35150.6
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
40 divided by 6 is 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 35150.66
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 35150.66, with a leftover of 0.004.