We're dividing 866339 by 25 
Let's see how many times 25 fits into 866339.

Let's proceed to step 1:
If we divide 8 by 25, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 25

Advancing to step 2:
If we divide 86 by 25, we get 3 and a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 75 from 86 and we're left with 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 25

Let's proceed to step 3:
The number 25 fits into 116 4 times, leaving a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 34.0
If we subtract 100 from 116, we get 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 25

Going ahead to step 4:
25 can be fit into 163 6 times, resulting in a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 346.0
If we subtract 150 from 163, we get 13.
Fetch the next digit (3) from the dividend, attach it to 13 and continue: 133 / 25

Advancing to step 5:
When dividing 133 by 25, we get 5 with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 3465.0
Subtracting 125 from 133 leaves us with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 25

Advancing to step 6:
89 divided by 25 is 3 with a remainder of 14.
The next digit of our result is 3. 
Result so far: 34653.0
If we take 75 away from 89, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
25 goes into 140 5 times with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 34653.5
Deduct 125 from 140 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
If we divide 150 by 25, we get 6 and a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 34653.56
The remainder is 0 after subtracting 150 from 150.
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 9:
0 divided by 25 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 34653.56
If we subtract 0 from 0, we 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.

Advancing to step 10:
When dividing 0 by 25, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 34653.56
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.

In conclusion, the division gives 34653.56 with a balance of 0.0.