278511 ÷ 80 
We want to figure out the number of times 278511 can be divided by 80.

Going ahead to step 1:
2 divided by 80 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 80

Going ahead to step 2:
If we divide 27 by 80, we get 0 and a remainder of 27.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 27, we get 27.
Fetch the next digit (8) from the dividend, attach it to 27 and continue: 278 / 80

On to step 3:
When dividing 278 by 80, we get 3 with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 240 away from 278, we end up with 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 80

Advancing to step 4:
The number 80 fits into 385 4 times, leaving a remainder of 65.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Subtracting 320 from 385 leaves us with 65.
Fetch the next digit (1) from the dividend, attach it to 65 and continue: 651 / 80

Going ahead to step 5:
The number 80 fits into 651 8 times, leaving a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 348.0
The remainder is 11 after subtracting 640 from 651.
Grab the next digit (1) from the dividend, add it to 11, then carry on: 111 / 80

On to step 6:
80 can be fit into 111 1 times, resulting in a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 3481.0
The remainder is 31 after subtracting 80 from 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
80 can be fit into 310 3 times, resulting in a remainder of 70.
The next digit of our result is 3. 
Result so far: 3481.3
The remainder is 70 after subtracting 240 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
80 can be fit into 700 8 times, resulting in a remainder of 60.
Use 8 as the next digit of our solution. 
Result so far: 3481.38
If we take 640 away from 700, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
600 divided by 80 is 7 with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 3481.387
If we take 560 away from 600, we end up 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 10:
400 divided by 80 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 3481.3875
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3481.3875
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.

Going ahead to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3481.3875
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 final outcome is 3481.3875, with a leftover of 0.0.