We're dividing 490459 by 18 
We're looking to find how many times 18 goes into 490459.

Advancing to step 1:
When dividing 4 by 18, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 18

Going ahead to step 2:
If we divide 49 by 18, we get 2 and a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 13 after subtracting 36 from 49.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 18

On to step 3:
130 divided by 18 is 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 27.0
The remainder is 4 after subtracting 126 from 130.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 18

Let's proceed to step 4:
The number 18 fits into 44 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 272.0
If we take 36 away from 44, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 18

Let's proceed to step 5:
If we divide 85 by 18, we get 4 and a remainder of 13.
The next digit of our result is 4. 
Result so far: 2724.0
Deduct 72 from 85 and we're left with 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 18

Moving on to step 6:
18 can be fit into 139 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 27247.0
If we subtract 126 from 139, we 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.

Step 7:
When dividing 130 by 18, we get 7 with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 27247.7
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
The number 18 fits into 40 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 27247.72
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
40 divided by 18 is 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 27247.722
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 27247.722, with a leftover of 0.0004.