798809 ÷ 20 
Our goal is to divide 798809 by 20.

Let's proceed to step 1:
20 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 20

Moving on to step 2:
79 divided by 20 is 3 with a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 19 after subtracting 60 from 79.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 20

Let's proceed to step 3:
198 divided by 20 is 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 39.0
If we take 180 away from 198, we end up with 18.
Include the next digit (8) from the dividend after 18, then repeat: 188 / 20

Going ahead to step 4:
188 divided by 20 is 9 with a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 399.0
If we subtract 180 from 188, we get 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 20

On to step 5:
80 divided by 20 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 3994.0
If we subtract 80 from 80, we get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 20

Moving on to step 6:
The number 20 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 39940.0
If we subtract 0 from 9, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
If we divide 90 by 20, we get 4 and a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 39940.4
The remainder is 10 after subtracting 80 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 39940.45
Deduct 100 from 100 and we're left 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.

Moving on to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 39940.45
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.

Moving on to step 10:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 39940.45
Deduct 0 from 0 and we're left 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 39940.45 and a remainder of 0.0.