We look at the division of 243090 by 80 
We're looking to find how many times 80 goes into 243090.

Going ahead to step 1:
When dividing 2 by 80, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 80

On to step 2:
80 can be fit into 24 0 times, resulting in a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 24 leaves us with 24.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 80

Let's proceed to step 3:
When dividing 243 by 80, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 3.0
If we take 240 away from 243, we end up with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 80

Let's proceed to step 4:
If we divide 30 by 80, we get 0 and a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 30.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (9) from the dividend, attach it to 30 and continue: 309 / 80

Advancing to step 5:
When dividing 309 by 80, we get 3 with a remainder of 69.
Record the quotient 3 as the next digit in the result. 
Result so far: 303.0
The remainder is 69 after subtracting 240 from 309.
Append the next digit (0) from the dividend to 69 and continue with: 690 / 80

Going ahead to step 6:
80 goes into 690 8 times with a remainder of 50.
Write down 8 as next digit of the result. 
Result so far: 3038.0
Subtract 640 from 690 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 7:
500 divided by 80 is 6 with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 3038.6
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.

Moving on to step 8:
The number 80 fits into 200 2 times, leaving a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 3038.62
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.

Advancing to step 9:
80 goes into 400 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 3038.625
If we subtract 400 from 400, 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.

Advancing to step 10:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 3038.625
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 11:
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: 3038.625
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.

In conclusion, the division gives 3038.625 with a balance of 0.0.