Let's divide 25882564 by 864
We're looking to find how many times 864 goes into 25882564.

Going ahead to step 1:
2 divided by 864 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 864

Let's proceed to step 2:
The number 864 fits into 25 0 times, leaving a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Fetch the next digit (8) from the dividend, attach it to 25 and continue: 258 / 864

Moving on to step 3:
864 can be fit into 258 0 times, resulting in a remainder of 258.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 258, we get 258.
Bring next digit (8) of the dividend behind the 258 and repeat the process: 2588 / 864

Advancing to step 4:
When dividing 2588 by 864, we get 2 with a remainder of 860.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 1728 from 2588 and we're left with 860.
Take the next digit (2) from the dividend and append it to 860, then repeat: 8602 / 864

Step 5:
When dividing 8602 by 864, we get 9 with a remainder of 826.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
If we take 7776 away from 8602, we end up with 826.
Bring next digit (5) of the dividend behind the 826 and repeat the process: 8265 / 864

Let's proceed to step 6:
864 can be fit into 8265 9 times, resulting in a remainder of 489.
Record the quotient 9 as the next digit in the result. 
Result so far: 299.0
If we take 7776 away from 8265, we end up with 489.
Grab the next digit (6) from the dividend, add it to 489, then carry on: 4896 / 864

Let's proceed to step 7:
If we divide 4896 by 864, we get 5 and a remainder of 576.
Put 5 as the next digit of the answer. 
Result so far: 2995.0
The remainder is 576 after subtracting 4320 from 4896.
Grab the next digit (4) from the dividend, add it to 576, then carry on: 5764 / 864

Moving on to step 8:
864 can be fit into 5764 6 times, resulting in a remainder of 580.
The next digit of our result is 6. 
Result so far: 29956.0
Deduct 5184 from 5764 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 9:
If we divide 5800 by 864, we get 6 and a remainder of 616.
The next digit of our result is 6. 
Result so far: 29956.6
If we subtract 5184 from 5800, we get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 10:
864 goes into 6160 7 times with a remainder of 112.
The number 7 becomes the next digit in our result. 
Result so far: 29956.67
Subtracting 6048 from 6160 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 11:
The number 864 fits into 1120 1 times, leaving a remainder of 256.
Put 1 as the next digit of the answer. 
Result so far: 29956.671
If we take 864 away from 1120, we end up with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 12:
When dividing 2560 by 864, we get 2 with a remainder of 832.
Record the quotient 2 as the next digit in the result. 
Result so far: 29956.6712
Subtract 1728 from 2560 to get 832.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Going ahead to step 13:
8320 divided by 864 is 9 with a remainder of 544.
Put 9 as the next digit of the answer. 
Result so far: 29956.67129
Subtract 7776 from 8320 to get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

On to step 14:
The number 864 fits into 5440 6 times, leaving a remainder of 256.
The next digit of our result is 6. 
Result so far: 29956.671296
If we subtract 5184 from 5440, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Moving on to step 15:
When dividing 2560 by 864, we get 2 with a remainder of 832.
Use 2 as the next digit of our solution. 
Result so far: 29956.6712962
The remainder is 832 after subtracting 1728 from 2560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Step 16:
If we divide 8320 by 864, we get 9 and a remainder of 544.
Write down 9 as next digit of the result. 
Result so far: 29956.67129629
Deduct 7776 from 8320 and we're left with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

The final outcome is 29956.67129629, with a leftover of 5.44e-07.