We're dividing 498087 by 20 
We're looking to find how many times 20 goes into 498087.

Let's proceed to step 1:
When dividing 4 by 20, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 20

Moving on to step 2:
49 divided by 20 is 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 9 after subtracting 40 from 49.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 20

On to step 3:
20 can be fit into 98 4 times, resulting in a remainder of 18.
The next digit of our result is 4. 
Result so far: 24.0
If we subtract 80 from 98, we get 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 20

Let's proceed to step 4:
The number 20 fits into 180 9 times, leaving a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 249.0
Subtracting 180 from 180 leaves us with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 20

On to step 5:
When dividing 8 by 20, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 2490.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 20

Going ahead to step 6:
87 divided by 20 is 4 with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 24904.0
The remainder is 7 after subtracting 80 from 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
The number 20 fits into 70 3 times, leaving a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 24904.3
Subtract 60 from 70 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.

On to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 24904.35
Subtract 100 from 100 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.

Step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24904.35
If we take 0 away from 0, we end up 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.

Moving on to step 10:
20 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24904.35
If we take 0 away from 0, we end up 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 final outcome is 24904.35, with a leftover of 0.0.