Let's divide 864631 by 25
We want to divide 864631 by 25.

Advancing to step 1:
The number 25 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 25

On to step 2:
If we divide 86 by 25, we get 3 and a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 75 from 86 leaves us with 11.
Bring next digit (4) of the dividend behind the 11 and repeat the process: 114 / 25

Step 3:
When dividing 114 by 25, we get 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Subtract 100 from 114 to get 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 25

Step 4:
146 divided by 25 is 5 with a remainder of 21.
Write down 5 as next digit of the result. 
Result so far: 345.0
Subtract 125 from 146 to get 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 25

Going ahead to step 5:
25 can be fit into 213 8 times, resulting in a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 3458.0
If we take 200 away from 213, we end up with 13.
Bring next digit (1) of the dividend behind the 13 and repeat the process: 131 / 25

Moving on to step 6:
The number 25 fits into 131 5 times, leaving a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 34585.0
Subtracting 125 from 131 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
25 can be fit into 60 2 times, resulting in a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 34585.2
The remainder is 10 after subtracting 50 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
If we divide 100 by 25, we get 4 and a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 34585.24
Subtract 100 from 100 to 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.

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: 34585.24
If we take 0 away from 0, we end up 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.

Going ahead to step 10:
0 divided by 25 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 34585.24
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.

The final result is 34585.24 with a remainder of 0.0.