639491 divided by 30 
We want to divide 639491 by 30.

Going ahead to step 1:
If we divide 6 by 30, we get 0 and 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.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 30

Advancing to step 2:
30 goes into 63 2 times with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 60 from 63 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 30

On to step 3:
If we divide 39 by 30, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 21.0
If we subtract 30 from 39, we get 9.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 30

Step 4:
The number 30 fits into 94 3 times, leaving a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 213.0
Subtract 90 from 94 to get 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 30

Moving on to step 5:
30 goes into 49 1 times with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 2131.0
Subtract 30 from 49 to get 19.
Take the next digit (1) from the dividend and append it to 19, then repeat: 191 / 30

Going ahead to step 6:
When dividing 191 by 30, we get 6 with a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 21316.0
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.
Write down 3 as next digit of the result. 
Result so far: 21316.3
Deduct 90 from 110 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.

Advancing to step 8:
If we divide 200 by 30, we get 6 and a remainder of 20.
The next digit of our result is 6. 
Result so far: 21316.36
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.

On to step 9:
200 divided by 30 is 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 21316.366
If we take 180 away from 200, 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.

Our division results in 21316.366 with a remaining 0.002.