We look at the division of 173121 by 5 
Our goal is to divide 173121 by 5.

Step 1:
5 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 5

Going ahead to step 2:
17 divided by 5 is 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 2 after subtracting 15 from 17.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 5

Going ahead to step 3:
If we divide 23 by 5, we get 4 and a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
Subtract 20 from 23 to get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 5

Step 4:
31 divided by 5 is 6 with a remainder of 1.
The next digit of our result is 6. 
Result so far: 346.0
The remainder is 1 after subtracting 30 from 31.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 5

Moving on to step 5:
5 can be fit into 12 2 times, resulting in a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 3462.0
The remainder is 2 after subtracting 10 from 12.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 5

Going ahead to step 6:
5 can be fit into 21 4 times, resulting in a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 34624.0
Subtracting 20 from 21 leaves us 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:
5 goes into 10 2 times with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 34624.2
Deduct 10 from 10 and we're left 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.

Advancing to step 8:
If we divide 0 by 5, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 34624.2
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.

Step 9:
5 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 34624.2
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.

After the division, we end up with 34624.2 and a remainder of 0.0.