We divide 630639 by 30
Let's see how many times 30 fits into 630639.

On to step 1:
6 divided by 30 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 30

Moving on to step 2:
When dividing 63 by 30, we get 2 with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 60 from 63 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 30

Let's proceed to step 3:
30 can be fit into 30 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 21.0
The remainder is 0 after subtracting 30 from 30.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 30

Advancing to step 4:
30 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 210.0
If we subtract 0 from 6, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 30

Moving on to step 5:
If we divide 63 by 30, we get 2 and a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 2102.0
The remainder is 3 after subtracting 60 from 63.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 30

On to step 6:
30 goes into 39 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 21021.0
Subtracting 30 from 39 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
The number 30 fits into 90 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 21021.3
If we take 90 away from 90, we end up 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.

Moving on to step 8:
The number 30 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 21021.3
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
0 divided by 30 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 21021.3
If we take 0 away from 0, we end up 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.

The final result is 21021.3 with a remainder of 0.0.