280431 divided by 86 
Let's see how many times 86 fits into 280431.

Advancing to step 1:
The number 86 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 86

Going ahead to step 2:
28 divided by 86 is 0 with a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 86

Moving on to step 3:
280 divided by 86 is 3 with a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 258 from 280 and we're left with 22.
Bring next digit (4) of the dividend behind the 22 and repeat the process: 224 / 86

Step 4:
If we divide 224 by 86, we get 2 and a remainder of 52.
The next digit of our result is 2. 
Result so far: 32.0
The remainder is 52 after subtracting 172 from 224.
Include the next digit (3) from the dividend after 52, then repeat: 523 / 86

Going ahead to step 5:
The number 86 fits into 523 6 times, leaving a remainder of 7.
The next digit of our result is 6. 
Result so far: 326.0
The remainder is 7 after subtracting 516 from 523.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 86

Let's proceed to step 6:
The number 86 fits into 71 0 times, leaving a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 3260.0
Deduct 0 from 71 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 7:
86 goes into 710 8 times with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 3260.8
Subtracting 688 from 710 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 8:
86 can be fit into 220 2 times, resulting in a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 3260.82
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 9:
86 can be fit into 480 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 3260.825
If we take 430 away from 480, we end up 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.

Going ahead to step 10:
The number 86 fits into 500 5 times, leaving a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 3260.8255
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

After the division, we end up with 3260.8255 and a remainder of 0.0007.