Let's divide 120305 by 30
Our goal is to divide 120305 by 30.

Going ahead to step 1:
If we divide 1 by 30, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 30

Let's proceed to step 2:
When dividing 12 by 30, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 30

Let's proceed to step 3:
120 divided by 30 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 120 from 120 and we're left with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 30

Step 4:
30 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 30

Going ahead to step 5:
30 goes into 30 1 times with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 401.0
Subtracting 30 from 30 leaves us with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 30

On to step 6:
5 divided by 30 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 4010.0
If we take 0 away from 5, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
The number 30 fits into 50 1 times, leaving a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 4010.1
The remainder is 20 after subtracting 30 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
200 divided by 30 is 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 4010.16
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.

Step 9:
When dividing 200 by 30, we get 6 with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 4010.166
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.

After the division, we end up with 4010.166 and a remainder of 0.002.