We divide 236387 by 20
We want to figure out the number of times 236387 can be divided by 20.

Step 1:
The number 20 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 20

Going ahead to step 2:
If we divide 23 by 20, we get 1 and a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 3 after subtracting 20 from 23.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 20

On to step 3:
20 can be fit into 36 1 times, resulting in a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtracting 20 from 36 leaves us with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 20

On to step 4:
If we divide 163 by 20, we get 8 and a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 118.0
If we take 160 away from 163, we end up with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 20

Going ahead to step 5:
If we divide 38 by 20, we get 1 and a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 1181.0
If we subtract 20 from 38, we get 18.
Grab the next digit (7) from the dividend, add it to 18, then carry on: 187 / 20

On to step 6:
20 can be fit into 187 9 times, resulting in a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 11819.0
Deduct 180 from 187 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
20 goes into 70 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 11819.3
Subtract 60 from 70 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.

Going ahead to step 8:
20 goes into 100 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 11819.35
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.

Step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 11819.35
If we take 0 away from 0, we end up 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.

Going ahead to step 10:
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: 11819.35
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.

After the division, we end up with 11819.35 and a remainder of 0.0.