129271 ÷ 45 
We want to divide 129271 by 45.

Moving on to step 1:
When dividing 1 by 45, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 45

Step 2:
If we divide 12 by 45, we get 0 and a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 45

On to step 3:
129 divided by 45 is 2 with a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 90 from 129, we get 39.
Take the next digit (2) from the dividend and append it to 39, then repeat: 392 / 45

Step 4:
45 goes into 392 8 times with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
Deduct 360 from 392 and we're left with 32.
Grab the next digit (7) from the dividend, add it to 32, then carry on: 327 / 45

Advancing to step 5:
45 goes into 327 7 times with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 287.0
Subtracting 315 from 327 leaves us with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 45

Going ahead to step 6:
When dividing 121 by 45, we get 2 with a remainder of 31.
Use 2 as the next digit of our solution. 
Result so far: 2872.0
If we subtract 90 from 121, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 7:
45 can be fit into 310 6 times, resulting in a remainder of 40.
The next digit of our result is 6. 
Result so far: 2872.6
Deduct 270 from 310 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
45 goes into 400 8 times with a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 2872.68
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 9:
The number 45 fits into 400 8 times, leaving a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 2872.688
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 2872.688 and a remainder of 0.004.