780913 ÷ 20 
We're looking to find how many times 20 goes into 780913.

Let's proceed to step 1:
If we divide 7 by 20, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 20

On to step 2:
The number 20 fits into 78 3 times, leaving a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 60 from 78 leaves us with 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 20

Step 3:
The number 20 fits into 180 9 times, leaving a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 39.0
If we subtract 180 from 180, we get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 20

On to step 4:
20 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 390.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 20

Step 5:
The number 20 fits into 91 4 times, leaving a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 3904.0
The remainder is 11 after subtracting 80 from 91.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 20

On to step 6:
20 goes into 113 5 times with a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 39045.0
The remainder is 13 after subtracting 100 from 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
20 can be fit into 130 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 39045.6
Subtract 120 from 130 to 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.

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: 39045.65
If we subtract 100 from 100, 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.

Advancing to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 39045.65
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.

Going ahead to step 10:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 39045.65
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 39045.65 with a remaining 0.0.