We look at the division of 728638 by 30 
Let's see how many times 30 fits into 728638.

On to step 1:
7 divided by 30 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 30

Let's proceed to step 2:
30 can be fit into 72 2 times, resulting in a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 12 after subtracting 60 from 72.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 30

Step 3:
30 can be fit into 128 4 times, resulting in a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Deduct 120 from 128 and we're left with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 30

Step 4:
30 goes into 86 2 times with a remainder of 26.
The next digit of our result is 2. 
Result so far: 242.0
Subtract 60 from 86 to get 26.
Take the next digit (3) from the dividend and append it to 26, then repeat: 263 / 30

On to step 5:
When dividing 263 by 30, we get 8 with a remainder of 23.
The next digit of our result is 8. 
Result so far: 2428.0
Subtracting 240 from 263 leaves us with 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 30

Advancing to step 6:
30 can be fit into 238 7 times, resulting in a remainder of 28.
Write down 7 as next digit of the result. 
Result so far: 24287.0
If we subtract 210 from 238, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 7:
The number 30 fits into 280 9 times, leaving a remainder of 10.
The next digit of our result is 9. 
Result so far: 24287.9
If we take 270 away from 280, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
When dividing 100 by 30, we get 3 with a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 24287.93
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
30 can be fit into 100 3 times, resulting in a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 24287.933
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 24287.933 with a remainder of 0.001.