129405 divided by 5 
We want to figure out the number of times 129405 can be divided by 5.

Let's proceed to step 1:
1 divided by 5 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 5

Going ahead to step 2:
5 goes into 12 2 times with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 10 from 12 and we're left with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 5

Let's proceed to step 3:
5 can be fit into 29 5 times, resulting in a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 25.0
The remainder is 4 after subtracting 25 from 29.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 5

Let's proceed to step 4:
If we divide 44 by 5, we get 8 and a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 258.0
Subtract 40 from 44 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 5

Moving on to step 5:
40 divided by 5 is 8 with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 2588.0
If we subtract 40 from 40, we get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 5

On to step 6:
5 can be fit into 5 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 25881.0
If we subtract 5 from 5, 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.

Advancing to step 7:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25881.0
Subtract 0 from 0 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.

Advancing to step 8:
If we divide 0 by 5, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 25881.0
If we subtract 0 from 0, 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.

Our division results in 25881.0 with a remaining 0.0.