Let's divide 485452 by 20
We're looking to find how many times 20 goes into 485452.

Going ahead to step 1:
20 can be fit into 4 0 times, resulting in 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.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 20

On to step 2:
The number 20 fits into 48 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 40 away from 48, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 20

Let's proceed to step 3:
20 can be fit into 85 4 times, resulting in a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtracting 80 from 85 leaves us with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 20

Moving on to step 4:
20 can be fit into 54 2 times, resulting in a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 242.0
If we subtract 40 from 54, we get 14.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 20

Let's proceed to step 5:
The number 20 fits into 145 7 times, leaving a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 2427.0
If we subtract 140 from 145, we get 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 20

Step 6:
The number 20 fits into 52 2 times, leaving a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 24272.0
Subtract 40 from 52 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
If we divide 120 by 20, we get 6 and a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 24272.6
If we subtract 120 from 120, 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.

Step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24272.6
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.

Advancing to 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: 24272.6
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.

After the division, we end up with 24272.6 and a remainder of 0.0.