We divide 789429 by 20
We want to figure out the number of times 789429 can be divided by 20.

Moving on to step 1:
20 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 20

Let's proceed to step 2:
If we divide 78 by 20, we get 3 and a remainder of 18.
The next digit of our result is 3. 
Result so far: 3.0
If we take 60 away from 78, we end up with 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 20

Going ahead to step 3:
20 can be fit into 189 9 times, resulting in a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
If we subtract 180 from 189, we get 9.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 20

Moving on to step 4:
94 divided by 20 is 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 394.0
Subtracting 80 from 94 leaves us with 14.
Take the next digit (2) from the dividend and append it to 14, then repeat: 142 / 20

Step 5:
When dividing 142 by 20, we get 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 3947.0
The remainder is 2 after subtracting 140 from 142.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 20

Advancing to step 6:
29 divided by 20 is 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 39471.0
Deduct 20 from 29 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.

Let's proceed to step 7:
90 divided by 20 is 4 with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 39471.4
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.

Moving on to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 39471.45
Subtract 100 from 100 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.

Advancing to step 9:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 39471.45
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.

On to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 39471.45
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.

The final outcome is 39471.45, with a leftover of 0.0.