We're dividing 173104 by 3 
Let's see how many times 3 fits into 173104.

Let's proceed to step 1:
If we divide 1 by 3, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 3

Step 2:
If we divide 17 by 3, we get 5 and a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 15 from 17 leaves us with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 3

Advancing to step 3:
23 divided by 3 is 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 57.0
Subtracting 21 from 23 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 3

Advancing to step 4:
The number 3 fits into 21 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 577.0
The remainder is 0 after subtracting 21 from 21.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 3

Advancing to step 5:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5770.0
Subtracting 0 from 0 leaves us with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 3

On to step 6:
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: 57701.0
Deduct 3 from 4 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
The number 3 fits into 10 3 times, leaving a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 57701.3
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 57701.33
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 57701.33 with a remainder of 0.001.