We're dividing 865249 by 3 
We want to divide 865249 by 3.

Step 1:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 6 from 8, we get 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 3

Let's proceed to step 2:
When dividing 26 by 3, we get 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
Subtract 24 from 26 to get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 3

Going ahead to step 3:
3 goes into 25 8 times with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 288.0
Subtracting 24 from 25 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 3

On to step 4:
When dividing 12 by 3, we get 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 2884.0
Subtracting 12 from 12 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Moving on to step 5:
3 can be fit into 4 1 times, resulting in a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 28841.0
The remainder is 1 after subtracting 3 from 4.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 3

Moving on to step 6:
The number 3 fits into 19 6 times, leaving a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 288416.0
Subtracting 18 from 19 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
3 goes into 10 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 288416.3
Subtracting 9 from 10 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 8:
If we divide 10 by 3, we get 3 and a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 288416.33
Subtracting 9 from 10 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 288416.33, with a leftover of 0.001.