We're dividing 99129 by 30 
We want to figure out the number of times 99129 can be divided by 30.

Let's proceed to step 1:
30 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 30

Going ahead to step 2:
30 goes into 99 3 times with a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 9 after subtracting 90 from 99.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 30

Let's proceed to step 3:
30 can be fit into 91 3 times, resulting in a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 33.0
If we take 90 away from 91, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 30

On to step 4:
30 goes into 12 0 times with a remainder of 12.
The next digit of our result is 0. 
Result so far: 330.0
If we take 0 away from 12, we end up with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 30

Moving on to step 5:
The number 30 fits into 129 4 times, leaving a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 3304.0
The remainder is 9 after subtracting 120 from 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 6:
The number 30 fits into 90 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3304.3
If we subtract 90 from 90, 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.

Going ahead to step 7:
When dividing 0 by 30, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3304.3
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.

Going ahead to step 8:
If we divide 0 by 30, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3304.3
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.

Our division results in 3304.3 with a remaining 0.0.