We look at the division of 33904 by 39 
We're looking to find how many times 39 goes into 33904.

Advancing to step 1:
If we divide 3 by 39, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 39

On to step 2:
39 goes into 33 0 times with a remainder of 33.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 39

On to step 3:
If we divide 339 by 39, we get 8 and a remainder of 27.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 312 from 339 and we're left with 27.
Take the next digit (0) from the dividend and append it to 27, then repeat: 270 / 39

On to step 4:
If we divide 270 by 39, we get 6 and a remainder of 36.
The next digit of our result is 6. 
Result so far: 86.0
If we take 234 away from 270, we end up with 36.
Fetch the next digit (4) from the dividend, attach it to 36 and continue: 364 / 39

Let's proceed to step 5:
When dividing 364 by 39, we get 9 with a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 869.0
Subtract 351 from 364 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 6:
The number 39 fits into 130 3 times, leaving a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 869.3
Subtract 117 from 130 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
When dividing 130 by 39, we get 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 869.33
If we subtract 117 from 130, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The quotient of the division is 869.33, and the remainder is 0.013.