123864 divided by 25 
Our goal is to divide 123864 by 25.

Let's proceed to step 1:
If we divide 1 by 25, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 25

Advancing to step 2:
If we divide 12 by 25, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 25

Step 3:
25 can be fit into 123 4 times, resulting in a remainder of 23.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 100 from 123, we get 23.
Take the next digit (8) from the dividend and append it to 23, then repeat: 238 / 25

On to step 4:
The number 25 fits into 238 9 times, leaving a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 49.0
Deduct 225 from 238 and we're left with 13.
Grab the next digit (6) from the dividend, add it to 13, then carry on: 136 / 25

On to step 5:
When dividing 136 by 25, we get 5 with a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 495.0
Deduct 125 from 136 and we're left with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 25

On to step 6:
If we divide 114 by 25, we get 4 and a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 4954.0
If we take 100 away from 114, 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.

Let's proceed to step 7:
The number 25 fits into 140 5 times, leaving a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 4954.5
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.

Moving on to step 8:
25 goes into 150 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 4954.56
If we subtract 150 from 150, 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.

Going ahead to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4954.56
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.

Let's proceed 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: 4954.56
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.

The final result is 4954.56 with a remainder of 0.0.