25171229 ÷ 5 
Our goal is to divide 25171229 by 5.

Going ahead to step 1:
2 divided by 5 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 5

Going ahead to step 2:
If we divide 25 by 5, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 25 from 25, we get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 5

On to step 3:
If we divide 1 by 5, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 50.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 5

Advancing to step 4:
5 goes into 17 3 times with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 503.0
If we subtract 15 from 17, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 5

Going ahead to step 5:
5 goes into 21 4 times with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 5034.0
Subtracting 20 from 21 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 5

Step 6:
12 divided by 5 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 50342.0
If we subtract 10 from 12, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 5

Moving on to step 7:
22 divided by 5 is 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 503424.0
If we take 20 away from 22, we end up with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 5

On to step 8:
29 divided by 5 is 5 with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 5034245.0
The remainder is 4 after subtracting 25 from 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
5 goes into 40 8 times with a remainder of 0.
The next digit of our result is 8. 
Result so far: 5034245.8
Subtract 40 from 40 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 10:
If we divide 0 by 5, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5034245.8
The remainder is 0 after subtracting 0 from 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 11:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5034245.8
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 5034245.8 with a remainder of 0.0.