Let's divide 780443 by 20
We want to figure out the number of times 780443 can be divided by 20.

Moving on to step 1:
20 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 20

Moving on to step 2:
When dividing 78 by 20, we get 3 with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 60 from 78 to get 18.
Take the next digit (0) from the dividend and append it to 18, then repeat: 180 / 20

Let's proceed to step 3:
When dividing 180 by 20, we get 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 39.0
The remainder is 0 after subtracting 180 from 180.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 20

Let's proceed to step 4:
4 divided by 20 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 390.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 20

On to step 5:
When dividing 44 by 20, we get 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 3902.0
The remainder is 4 after subtracting 40 from 44.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 20

Advancing to step 6:
The number 20 fits into 43 2 times, leaving a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 39022.0
If we take 40 away from 43, 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.

On to step 7:
20 can be fit into 30 1 times, resulting in a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 39022.1
Deduct 20 from 30 and we're left 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.

Going ahead to step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 39022.15
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.

Moving on to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 39022.15
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.

Let's proceed to step 10:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 39022.15
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.

The quotient of the division is 39022.15, and the remainder is 0.0.