280517 divided by 30 
We want to figure out the number of times 280517 can be divided by 30.

Advancing to step 1:
The number 30 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 30

Let's proceed to step 2:
When dividing 28 by 30, we get 0 with a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 30

On to step 3:
If we divide 280 by 30, we get 9 and a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 270 away from 280, we end up with 10.
Include the next digit (5) from the dividend after 10, then repeat: 105 / 30

Advancing to step 4:
30 can be fit into 105 3 times, resulting in a remainder of 15.
The next digit of our result is 3. 
Result so far: 93.0
Subtract 90 from 105 to get 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 30

Step 5:
The number 30 fits into 151 5 times, leaving a remainder of 1.
The next digit of our result is 5. 
Result so far: 935.0
Deduct 150 from 151 and we're left with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 30

Going ahead to step 6:
30 goes into 17 0 times with a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 9350.0
Subtract 0 from 17 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
If we divide 170 by 30, we get 5 and a remainder of 20.
The next digit of our result is 5. 
Result so far: 9350.5
If we take 150 away from 170, 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.

On to step 8:
The number 30 fits into 200 6 times, leaving a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 9350.56
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.

Moving on to step 9:
200 divided by 30 is 6 with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 9350.566
If we subtract 180 from 200, we 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.

The final outcome is 9350.566, with a leftover of 0.002.