Let's divide 768409 by 20
Let's see how many times 20 fits into 768409.

Moving on to step 1:
The number 20 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 20

Advancing to step 2:
20 goes into 76 3 times with a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 60 from 76, we get 16.
Grab the next digit (8) from the dividend, add it to 16, then carry on: 168 / 20

Going ahead to step 3:
When dividing 168 by 20, we get 8 with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtracting 160 from 168 leaves us with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 20

Going ahead to step 4:
The number 20 fits into 84 4 times, leaving a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 384.0
Subtracting 80 from 84 leaves us with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 20

Let's proceed to step 5:
When dividing 40 by 20, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 3842.0
If we take 40 away from 40, we end up with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 20

On to step 6:
If we divide 9 by 20, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 38420.0
Deduct 0 from 9 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
20 goes into 90 4 times with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 38420.4
Subtract 80 from 90 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.

Step 8:
100 divided by 20 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 38420.45
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.

Going ahead to step 9:
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: 38420.45
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.

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: 38420.45
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.

The final outcome is 38420.45, with a leftover of 0.0.