We divide 389936 by 20
We're looking to find how many times 20 goes into 389936.

Let's proceed to step 1:
The number 20 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 20

On to step 2:
The number 20 fits into 38 1 times, leaving a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 20 from 38 and we're left with 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 20

Let's proceed to step 3:
The number 20 fits into 189 9 times, leaving a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we subtract 180 from 189, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 20

Advancing to step 4:
If we divide 99 by 20, we get 4 and a remainder of 19.
Write down 4 as next digit of the result. 
Result so far: 194.0
Deduct 80 from 99 and we're left with 19.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 20

Step 5:
The number 20 fits into 193 9 times, leaving a remainder of 13.
The next digit of our result is 9. 
Result so far: 1949.0
If we subtract 180 from 193, we get 13.
Bring next digit (6) of the dividend behind the 13 and repeat the process: 136 / 20

Advancing to step 6:
20 goes into 136 6 times with a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 19496.0
The remainder is 16 after subtracting 120 from 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
20 can be fit into 160 8 times, resulting in a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 19496.8
The remainder is 0 after subtracting 160 from 160.
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 8:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 19496.8
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 9:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 19496.8
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 19496.8, with a leftover of 0.0.