640017 divided by 25 
Our goal is to divide 640017 by 25.

Let's proceed to step 1:
25 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 25

Step 2:
When dividing 64 by 25, we get 2 with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 14 after subtracting 50 from 64.
Take the next digit (0) from the dividend and append it to 14, then repeat: 140 / 25

Moving on to step 3:
140 divided by 25 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Subtract 125 from 140 to get 15.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 25

Moving on to step 4:
If we divide 150 by 25, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 256.0
Deduct 150 from 150 and we're left with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 25

Advancing to step 5:
25 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 2560.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 25

On to step 6:
When dividing 17 by 25, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 25600.0
Subtract 0 from 17 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
When dividing 170 by 25, we get 6 with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 25600.6
The remainder is 20 after subtracting 150 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
When dividing 200 by 25, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 25600.68
Subtract 200 from 200 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.

Let's proceed to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 25600.68
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.

On to step 10:
If we divide 0 by 25, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 25600.68
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.

In conclusion, the division gives 25600.68 with a balance of 0.0.