280640 divided by 80 
We're looking to find how many times 80 goes into 280640.

Step 1:
If we divide 2 by 80, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 80

Advancing to step 2:
28 divided by 80 is 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 80

Step 3:
80 goes into 280 3 times with a remainder of 40.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 240 from 280 and we're left with 40.
Grab the next digit (6) from the dividend, add it to 40, then carry on: 406 / 80

Going ahead to step 4:
406 divided by 80 is 5 with a remainder of 6.
The next digit of our result is 5. 
Result so far: 35.0
Subtracting 400 from 406 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 80

Let's proceed to step 5:
The number 80 fits into 64 0 times, leaving a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 350.0
If we take 0 away from 64, we end up with 64.
Append the next digit (0) from the dividend to 64 and continue with: 640 / 80

Going ahead to step 6:
80 can be fit into 640 8 times, resulting in a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 3508.0
Deduct 640 from 640 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.

Going ahead to step 7:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3508.0
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.

Moving on to step 8:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 3508.0
Subtract 0 from 0 to 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.

The quotient of the division is 3508.0, and the remainder is 0.0.