We divide 25999 by 86
We want to figure out the number of times 25999 can be divided by 86.

On to step 1:
86 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 86

Step 2:
When dividing 25 by 86, we get 0 with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Grab the next digit (9) from the dividend, add it to 25, then carry on: 259 / 86

On to step 3:
The number 86 fits into 259 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 258 away from 259, we end up with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 86

Moving on to step 4:
If we divide 19 by 86, we get 0 and a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
Subtract 0 from 19 to get 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 86

Advancing to step 5:
The number 86 fits into 199 2 times, leaving a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 302.0
Subtract 172 from 199 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 6:
The number 86 fits into 270 3 times, leaving a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 302.3
If we subtract 258 from 270, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 7:
If we divide 120 by 86, we get 1 and a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 302.31
If we take 86 away from 120, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
86 can be fit into 340 3 times, resulting in a remainder of 82.
The next digit of our result is 3. 
Result so far: 302.313
The remainder is 82 after subtracting 258 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 9:
86 can be fit into 820 9 times, resulting in a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 302.3139
If we subtract 774 from 820, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 10:
When dividing 460 by 86, we get 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 302.31395
The remainder is 30 after subtracting 430 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
86 goes into 300 3 times with a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 302.313953
Deduct 258 from 300 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 12:
The number 86 fits into 420 4 times, leaving a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 302.3139534
Deduct 344 from 420 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 13:
86 can be fit into 760 8 times, resulting in a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 302.31395348
The remainder is 72 after subtracting 688 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

After the division, we end up with 302.31395348 and a remainder of 7.2e-08.