We look at the division of 771863 by 20 
We want to divide 771863 by 20.

Step 1:
If we divide 7 by 20, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 20

Advancing to step 2:
20 can be fit into 77 3 times, resulting in a remainder of 17.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 17 after subtracting 60 from 77.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 20

Let's proceed to step 3:
If we divide 171 by 20, we get 8 and a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
Deduct 160 from 171 and we're left with 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 20

On to step 4:
20 goes into 118 5 times with a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 385.0
Deduct 100 from 118 and we're left with 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 20

Going ahead to step 5:
If we divide 186 by 20, we get 9 and a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 3859.0
If we subtract 180 from 186, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 20

Advancing to step 6:
20 goes into 63 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 38593.0
If we take 60 away from 63, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
20 can be fit into 30 1 times, resulting in a remainder of 10.
The next digit of our result is 1. 
Result so far: 38593.1
Subtracting 20 from 30 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.

On to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 38593.15
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.

Advancing to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 38593.15
The remainder is 0 after subtracting 0 from 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 10:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38593.15
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.

Our division results in 38593.15 with a remaining 0.0.