455953 ÷ 20 
We're looking to find how many times 20 goes into 455953.

Step 1:
20 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 20

Advancing to step 2:
20 goes into 45 2 times with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 40 away from 45, we end up with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 20

Moving on to step 3:
20 goes into 55 2 times with a remainder of 15.
The next digit of our result is 2. 
Result so far: 22.0
Subtracting 40 from 55 leaves us with 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 20

Moving on to step 4:
The number 20 fits into 159 7 times, leaving a remainder of 19.
The next digit of our result is 7. 
Result so far: 227.0
Subtract 140 from 159 to get 19.
Fetch the next digit (5) from the dividend, attach it to 19 and continue: 195 / 20

On to step 5:
The number 20 fits into 195 9 times, leaving a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 2279.0
Deduct 180 from 195 and we're left with 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 20

Advancing to step 6:
The number 20 fits into 153 7 times, leaving a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 22797.0
Subtracting 140 from 153 leaves us with 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:
20 can be fit into 130 6 times, resulting in a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 22797.6
If we subtract 120 from 130, we 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.

Step 8:
20 goes into 100 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 22797.65
The remainder is 0 after subtracting 100 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 22797.65
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.

Let's proceed to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 22797.65
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.

Our division results in 22797.65 with a remaining 0.0.