489193 ÷ 20 
Our goal is to divide 489193 by 20.

On to step 1:
4 divided by 20 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 20

Let's proceed to step 2:
If we divide 48 by 20, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 8 after subtracting 40 from 48.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 20

On to step 3:
If we divide 89 by 20, we get 4 and a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Deduct 80 from 89 and we're left with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 20

Step 4:
91 divided by 20 is 4 with 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.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 20

Step 5:
If we divide 119 by 20, we get 5 and a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 2445.0
Subtracting 100 from 119 leaves us with 19.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 20

Going ahead to step 6:
193 divided by 20 is 9 with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 24459.0
Subtract 180 from 193 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 7:
130 divided by 20 is 6 with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 24459.6
Subtract 120 from 130 to 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.

Moving on to step 8:
100 divided by 20 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 24459.65
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.

Let's proceed to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 24459.65
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.

Step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24459.65
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.

After the division, we end up with 24459.65 and a remainder of 0.0.