We look at the division of 385451 by 20 
Let's see how many times 20 fits into 385451.

Step 1:
20 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 20

Let's proceed to step 2:
When dividing 38 by 20, we get 1 with a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 18 after subtracting 20 from 38.
Take the next digit (5) from the dividend and append it to 18, then repeat: 185 / 20

Going ahead to step 3:
20 can be fit into 185 9 times, resulting in a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 19.0
If we subtract 180 from 185, we get 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 20

Advancing to step 4:
20 can be fit into 54 2 times, resulting in a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 192.0
If we take 40 away from 54, we end up with 14.
Include the next digit (5) from the dividend after 14, then repeat: 145 / 20

Advancing to step 5:
20 can be fit into 145 7 times, resulting in a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 1927.0
The remainder is 5 after subtracting 140 from 145.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 20

Let's proceed to step 6:
The number 20 fits into 51 2 times, leaving a remainder of 11.
The next digit of our result is 2. 
Result so far: 19272.0
Subtract 40 from 51 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
The number 20 fits into 110 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 19272.5
Subtracting 100 from 110 leaves us with 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.
Put 5 as the next digit of the answer. 
Result so far: 19272.55
Subtracting 100 from 100 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.

After the division, we end up with 19272.55 and a remainder of 0.0.