We divide 199903 by 20
Our goal is to divide 199903 by 20.

Step 1:
1 divided by 20 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 20

Step 2:
20 goes into 19 0 times with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Append the next digit (9) from the dividend to 19 and continue with: 199 / 20

Step 3:
20 can be fit into 199 9 times, resulting in a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 180 from 199 leaves us with 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 20

On to step 4:
20 can be fit into 199 9 times, resulting in a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 99.0
If we take 180 away from 199, we end up with 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 20

Let's proceed to step 5:
20 can be fit into 190 9 times, resulting in a remainder of 10.
The next digit of our result is 9. 
Result so far: 999.0
If we subtract 180 from 190, we get 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 20

On to step 6:
If we divide 103 by 20, we get 5 and a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 9995.0
Subtracting 100 from 103 leaves us 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.

Let's proceed to step 7:
30 divided by 20 is 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 9995.1
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.

Step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 9995.15
If we take 100 away from 100, 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.

Advancing 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: 9995.15
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:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 9995.15
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.

Our division results in 9995.15 with a remaining 0.0.