12429 ÷ 25 
We want to divide 12429 by 25.

Step 1:
1 divided by 25 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 25

Moving on to step 2:
25 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 25

Advancing to step 3:
If we divide 124 by 25, we get 4 and a remainder of 24.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 100 from 124, we get 24.
Bring next digit (2) of the dividend behind the 24 and repeat the process: 242 / 25

Let's proceed to step 4:
25 goes into 242 9 times with a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
Subtracting 225 from 242 leaves us with 17.
Grab the next digit (9) from the dividend, add it to 17, then carry on: 179 / 25

Going ahead to step 5:
25 goes into 179 7 times with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 497.0
Deduct 175 from 179 and we're left with 4.
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 6:
25 goes into 40 1 times with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 497.1
Deduct 25 from 40 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.

Advancing to step 7:
When dividing 150 by 25, we get 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 497.16
If we take 150 away from 150, 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.

Step 8:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 497.16
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.

On 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: 497.16
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.

After the division, we end up with 497.16 and a remainder of 0.0.