331631 ÷ 20 
We want to divide 331631 by 20.

Going ahead to step 1:
The number 20 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 20

Let's proceed to step 2:
20 goes into 33 1 times with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 20 from 33, we get 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 20

Going ahead to step 3:
20 goes into 131 6 times with a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 120 from 131 to get 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 20

On to step 4:
The number 20 fits into 116 5 times, leaving a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 165.0
Deduct 100 from 116 and we're left with 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 20

Moving on to step 5:
20 can be fit into 163 8 times, resulting in a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 1658.0
If we take 160 away from 163, we end up with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 20

Step 6:
The number 20 fits into 31 1 times, leaving a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 16581.0
The remainder is 11 after subtracting 20 from 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
20 goes into 110 5 times with a remainder of 10.
The next digit of our result is 5. 
Result so far: 16581.5
If we subtract 100 from 110, 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.

On to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 16581.55
Subtracting 100 from 100 leaves us 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.

After the division, we end up with 16581.55 and a remainder of 0.0.