We're dividing 455466 by 20 
Let's see how many times 20 fits into 455466.

Step 1:
4 divided by 20 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 20

Step 2:
20 can be fit into 45 2 times, resulting in a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 40 from 45 and we're left with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 20

Step 3:
If we divide 55 by 20, we get 2 and a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we take 40 away from 55, we end up with 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 20

On to step 4:
154 divided by 20 is 7 with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 227.0
If we subtract 140 from 154, we get 14.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 20

Advancing to step 5:
The number 20 fits into 146 7 times, leaving a remainder of 6.
The next digit of our result is 7. 
Result so far: 2277.0
If we subtract 140 from 146, we get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 20

On to step 6:
20 can be fit into 66 3 times, resulting in a remainder of 6.
The next digit of our result is 3. 
Result so far: 22773.0
Subtract 60 from 66 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
20 can be fit into 60 3 times, resulting in a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 22773.3
If we take 60 away from 60, 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.

On to step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 22773.3
Subtracting 0 from 0 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.

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: 22773.3
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 22773.3 with a balance of 0.0.