We look at the division of 128291 by 30 
We want to divide 128291 by 30.

Step 1:
30 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 30

Step 2:
12 divided by 30 is 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 30

Let's proceed to step 3:
30 goes into 128 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 120 from 128 and we're left with 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 30

Advancing to step 4:
The number 30 fits into 82 2 times, leaving a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Subtract 60 from 82 to get 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 30

Advancing to step 5:
30 goes into 229 7 times with a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 427.0
The remainder is 19 after subtracting 210 from 229.
Append the next digit (1) from the dividend to 19 and continue with: 191 / 30

Going ahead to step 6:
191 divided by 30 is 6 with a remainder of 11.
Write down 6 as next digit of the result. 
Result so far: 4276.0
Subtract 180 from 191 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
30 goes into 110 3 times with a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 4276.3
If we take 90 away from 110, 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.

Let's proceed to step 8:
200 divided by 30 is 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 4276.36
Deduct 180 from 200 and we're left 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.

Let's proceed to step 9:
30 goes into 200 6 times with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 4276.366
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.

The final outcome is 4276.366, with a leftover of 0.002.