We're dividing 489190 by 20 
Our goal is to divide 489190 by 20.

Going ahead to step 1:
20 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 20

Step 2:
20 can be fit into 48 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 40 from 48 to get 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 20

Let's proceed to step 3:
If we divide 89 by 20, we get 4 and a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Subtracting 80 from 89 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 20

Advancing to step 4:
The number 20 fits into 91 4 times, leaving a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 244.0
Deduct 80 from 91 and we're left with 11.
Bring next digit (9) of the dividend behind the 11 and repeat the process: 119 / 20

Let's proceed to step 5:
20 goes into 119 5 times with a remainder of 19.
Write down 5 as next digit of the result. 
Result so far: 2445.0
The remainder is 19 after subtracting 100 from 119.
Bring next digit (0) of the dividend behind the 19 and repeat the process: 190 / 20

On to step 6:
20 goes into 190 9 times with a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 24459.0
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
20 goes into 100 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 24459.5
The remainder is 0 after subtracting 100 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24459.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24459.5
Subtract 0 from 0 to get 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 24459.5 and a remainder of 0.0.