489638 divided by 30 
We're looking to find how many times 30 goes into 489638.

Advancing to step 1:
30 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 30

On to step 2:
The number 30 fits into 48 1 times, leaving a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 30 from 48 leaves us with 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 30

On to step 3:
30 goes into 189 6 times with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 180 from 189 to get 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 30

Moving on to step 4:
30 can be fit into 96 3 times, resulting in a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 163.0
If we subtract 90 from 96, we get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 30

Moving on to step 5:
If we divide 63 by 30, we get 2 and a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 1632.0
Subtracting 60 from 63 leaves us with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 30

Going ahead to step 6:
The number 30 fits into 38 1 times, leaving a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 16321.0
If we take 30 away from 38, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
80 divided by 30 is 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 16321.2
Subtracting 60 from 80 leaves us 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 8:
200 divided by 30 is 6 with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 16321.26
Subtract 180 from 200 to get 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 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: 16321.266
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.

The final outcome is 16321.266, with a leftover of 0.002.