203909 ÷ 80 
Let's see how many times 80 fits into 203909.

Let's proceed to step 1:
80 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 80

Moving on to step 2:
If we divide 20 by 80, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Grab the next digit (3) from the dividend, add it to 20, then carry on: 203 / 80

Let's proceed to step 3:
When dividing 203 by 80, we get 2 with a remainder of 43.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 160 from 203, we get 43.
Grab the next digit (9) from the dividend, add it to 43, then carry on: 439 / 80

Moving on to step 4:
80 goes into 439 5 times with a remainder of 39.
The next digit of our result is 5. 
Result so far: 25.0
Deduct 400 from 439 and we're left with 39.
Append the next digit (0) from the dividend to 39 and continue with: 390 / 80

Step 5:
390 divided by 80 is 4 with a remainder of 70.
Write down 4 as next digit of the result. 
Result so far: 254.0
Deduct 320 from 390 and we're left with 70.
Append the next digit (9) from the dividend to 70 and continue with: 709 / 80

Let's proceed to step 6:
If we divide 709 by 80, we get 8 and a remainder of 69.
Use 8 as the next digit of our solution. 
Result so far: 2548.0
Deduct 640 from 709 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 7:
80 can be fit into 690 8 times, resulting in a remainder of 50.
Put 8 as the next digit of the answer. 
Result so far: 2548.8
Subtracting 640 from 690 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
80 can be fit into 500 6 times, resulting in a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 2548.86
Subtracting 480 from 500 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
200 divided by 80 is 2 with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 2548.862
Subtracting 160 from 200 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 2548.8625
Deduct 400 from 400 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.

Moving on to step 11:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2548.8625
Subtracting 0 from 0 leaves us 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.

Let's proceed to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2548.8625
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.

In conclusion, the division gives 2548.8625 with a balance of 0.0.