We're dividing 129843 by 15 
We want to divide 129843 by 15.

Going ahead to step 1:
1 divided by 15 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 15

Moving on to step 2:
15 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 15

Let's proceed to step 3:
The number 15 fits into 129 8 times, leaving a remainder of 9.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 120 from 129 leaves us with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 15

Going ahead to step 4:
15 goes into 98 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 86.0
The remainder is 8 after subtracting 90 from 98.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 15

Advancing to step 5:
15 goes into 84 5 times with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 865.0
Subtract 75 from 84 to get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 15

Step 6:
The number 15 fits into 93 6 times, leaving a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 8656.0
Subtract 90 from 93 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
30 divided by 15 is 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 8656.2
Subtract 30 from 30 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.

On to step 8:
15 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 8656.2
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.

Let's proceed to step 9:
0 divided by 15 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 8656.2
Subtracting 0 from 0 leaves us 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.

Our division results in 8656.2 with a remaining 0.0.