385209 ÷ 30 
Our goal is to divide 385209 by 30.

Going ahead to step 1:
30 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 30

Step 2:
The number 30 fits into 38 1 times, leaving a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 30 from 38 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 30

Step 3:
85 divided by 30 is 2 with a remainder of 25.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 60 from 85 and we're left with 25.
Include the next digit (2) from the dividend after 25, then repeat: 252 / 30

Moving on to step 4:
If we divide 252 by 30, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 128.0
Deduct 240 from 252 and we're left with 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 30

Step 5:
30 can be fit into 120 4 times, resulting in a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 1284.0
If we take 120 away from 120, we end up with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 30

On to step 6:
When dividing 9 by 30, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 12840.0
Subtract 0 from 9 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
If we divide 90 by 30, we get 3 and a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 12840.3
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.

On to step 8:
The number 30 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12840.3
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.

On to step 9:
When dividing 0 by 30, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 12840.3
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.

After the division, we end up with 12840.3 and a remainder of 0.0.