Let's divide 128159 by 30
We're looking to find how many times 30 goes into 128159.

Advancing to step 1:
If we divide 1 by 30, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 30

On to step 2:
If we divide 12 by 30, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 30

On to step 3:
30 can be fit into 128 4 times, resulting in a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 120 away from 128, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 30

Step 4:
When dividing 81 by 30, we get 2 with a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we take 60 away from 81, we end up with 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 30

Step 5:
If we divide 215 by 30, we get 7 and a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 427.0
The remainder is 5 after subtracting 210 from 215.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 30

Advancing to step 6:
When dividing 59 by 30, we get 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 4271.0
If we subtract 30 from 59, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 7:
If we divide 290 by 30, we get 9 and a remainder of 20.
Record the quotient 9 as the next digit in the result. 
Result so far: 4271.9
Subtracting 270 from 290 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
When dividing 200 by 30, we get 6 with a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 4271.96
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
200 divided by 30 is 6 with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 4271.966
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 4271.966 with a remaining 0.002.