Let's divide 31721 by 156
We want to divide 31721 by 156.

Going ahead to step 1:
156 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 156

Advancing to step 2:
If we divide 31 by 156, we get 0 and a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Include the next digit (7) from the dividend after 31, then repeat: 317 / 156

On to step 3:
If we divide 317 by 156, we get 2 and a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 312 from 317 to get 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 156

Advancing to step 4:
156 goes into 52 0 times with a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtract 0 from 52 to get 52.
Append the next digit (1) from the dividend to 52 and continue with: 521 / 156

Step 5:
156 goes into 521 3 times with a remainder of 53.
Use 3 as the next digit of our solution. 
Result so far: 203.0
Deduct 468 from 521 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 6:
When dividing 530 by 156, we get 3 with a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 203.3
Subtract 468 from 530 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 7:
620 divided by 156 is 3 with a remainder of 152.
The next digit of our result is 3. 
Result so far: 203.33
Deduct 468 from 620 and we're left with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

After the division, we end up with 203.33 and a remainder of 0.152.