455484 ÷ 20 
Let's see how many times 20 fits into 455484.

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
If we subtract 0 from 4, we get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 20

Advancing to step 2:
When dividing 45 by 20, we get 2 with a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 40 away from 45, we end up with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 20

Step 3:
When dividing 55 by 20, we get 2 with a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtracting 40 from 55 leaves us with 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 20

Moving on to step 4:
154 divided by 20 is 7 with a remainder of 14.
The next digit of our result is 7. 
Result so far: 227.0
The remainder is 14 after subtracting 140 from 154.
Append the next digit (8) from the dividend to 14 and continue with: 148 / 20

Moving on to step 5:
20 can be fit into 148 7 times, resulting in a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 2277.0
Subtract 140 from 148 to get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 20

Advancing to step 6:
84 divided by 20 is 4 with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 22774.0
If we take 80 away from 84, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
The number 20 fits into 40 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 22774.2
The remainder is 0 after subtracting 40 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
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: 22774.2
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.

Moving on to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 22774.2
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.

In conclusion, the division gives 22774.2 with a balance of 0.0.