Let's divide 259890 by 80
We want to divide 259890 by 80.

Going ahead to step 1:
When dividing 2 by 80, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 80

Let's proceed to step 2:
If we divide 25 by 80, we get 0 and a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Fetch the next digit (9) from the dividend, attach it to 25 and continue: 259 / 80

Let's proceed to step 3:
The number 80 fits into 259 3 times, leaving a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 240 from 259 to get 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 80

Advancing to step 4:
When dividing 198 by 80, we get 2 with a remainder of 38.
The next digit of our result is 2. 
Result so far: 32.0
If we take 160 away from 198, we end up with 38.
Fetch the next digit (9) from the dividend, attach it to 38 and continue: 389 / 80

Moving on to step 5:
389 divided by 80 is 4 with a remainder of 69.
Use 4 as the next digit of our solution. 
Result so far: 324.0
Subtracting 320 from 389 leaves us with 69.
Append the next digit (0) from the dividend to 69 and continue with: 690 / 80

On to step 6:
If we divide 690 by 80, we get 8 and a remainder of 50.
Write down 8 as next digit of the result. 
Result so far: 3248.0
The remainder is 50 after subtracting 640 from 690.
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 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: 3248.6
If we subtract 480 from 500, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 3248.62
Subtract 160 from 200 to get 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 can be fit into 400 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 3248.625
Subtracting 400 from 400 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.

Going ahead to step 10:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3248.625
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.

Advancing to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3248.625
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.

The quotient of the division is 3248.625, and the remainder is 0.0.