We look at the division of 431923 by 20 
We want to divide 431923 by 20.

Step 1:
4 divided by 20 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 20

Let's proceed to step 2:
20 goes into 43 2 times with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 40 away from 43, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 20

Advancing to step 3:
20 can be fit into 31 1 times, resulting in a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
If we take 20 away from 31, we end up with 11.
Bring next digit (9) of the dividend behind the 11 and repeat the process: 119 / 20

Moving on to step 4:
20 goes into 119 5 times with a remainder of 19.
Record the quotient 5 as the next digit in the result. 
Result so far: 215.0
If we subtract 100 from 119, we get 19.
Include the next digit (2) from the dividend after 19, then repeat: 192 / 20

On to step 5:
The number 20 fits into 192 9 times, leaving a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 2159.0
Deduct 180 from 192 and we're left with 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 20

Moving on to step 6:
20 goes into 123 6 times with a remainder of 3.
The next digit of our result is 6. 
Result so far: 21596.0
Subtract 120 from 123 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
30 divided by 20 is 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 21596.1
The remainder is 10 after subtracting 20 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 21596.15
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.

Step 9:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 21596.15
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.

Moving on to step 10:
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: 21596.15
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.

The quotient of the division is 21596.15, and the remainder is 0.0.