Let's divide 172020 by 31
We want to divide 172020 by 31.

Moving on to step 1:
31 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 31

Going ahead to step 2:
17 divided by 31 is 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Include the next digit (2) from the dividend after 17, then repeat: 172 / 31

Moving on to step 3:
The number 31 fits into 172 5 times, leaving a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 155 from 172, we get 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 31

Advancing to step 4:
If we divide 170 by 31, we get 5 and a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 55.0
If we take 155 away from 170, we end up with 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 31

Going ahead to step 5:
152 divided by 31 is 4 with a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 554.0
Deduct 124 from 152 and we're left with 28.
Include the next digit (0) from the dividend after 28, then repeat: 280 / 31

On to step 6:
If we divide 280 by 31, we get 9 and a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 5549.0
Deduct 279 from 280 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.

Step 7:
When dividing 10 by 31, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 5549.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
The number 31 fits into 100 3 times, leaving a remainder of 7.
The next digit of our result is 3. 
Result so far: 5549.03
Subtracting 93 from 100 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
The number 31 fits into 70 2 times, leaving a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 5549.032
The remainder is 8 after subtracting 62 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
31 goes into 80 2 times with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 5549.0322
If we take 62 away from 80, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 5549.0322 with a remaining 0.00018.