We divide 631579 by 20
We're looking to find how many times 20 goes into 631579.

Moving on to step 1:
The number 20 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 20

Step 2:
If we divide 63 by 20, we get 3 and a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 60 from 63, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 20

Moving on to step 3:
The number 20 fits into 31 1 times, leaving a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtract 20 from 31 to get 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 20

Advancing to step 4:
115 divided by 20 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 315.0
Deduct 100 from 115 and we're left with 15.
Take the next digit (7) from the dividend and append it to 15, then repeat: 157 / 20

Going ahead to step 5:
157 divided by 20 is 7 with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 3157.0
The remainder is 17 after subtracting 140 from 157.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 20

Going ahead to step 6:
179 divided by 20 is 8 with a remainder of 19.
The next digit of our result is 8. 
Result so far: 31578.0
The remainder is 19 after subtracting 160 from 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
If we divide 190 by 20, we get 9 and a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 31578.9
Subtracting 180 from 190 leaves us with 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:
When dividing 100 by 20, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 31578.95
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.

Advancing to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 31578.95
Deduct 0 from 0 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.

Step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 31578.95
Subtracting 0 from 0 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.

Our division results in 31578.95 with a remaining 0.0.