516309 divided by 30 
We want to figure out the number of times 516309 can be divided by 30.

Moving on to step 1:
30 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 30

Moving on to step 2:
If we divide 51 by 30, we get 1 and a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 30 away from 51, we end up with 21.
Fetch the next digit (6) from the dividend, attach it to 21 and continue: 216 / 30

On to step 3:
When dividing 216 by 30, we get 7 with a remainder of 6.
The next digit of our result is 7. 
Result so far: 17.0
Subtracting 210 from 216 leaves us with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 30

Step 4:
30 can be fit into 63 2 times, resulting in a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 172.0
Subtract 60 from 63 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 30

Step 5:
The number 30 fits into 30 1 times, leaving a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1721.0
Subtracting 30 from 30 leaves us with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 30

Step 6:
The number 30 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 17210.0
Subtract 0 from 9 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
The number 30 fits into 90 3 times, leaving a remainder of 0.
The next digit of our result is 3. 
Result so far: 17210.3
Subtracting 90 from 90 leaves us 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.

On to step 8:
If we divide 0 by 30, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17210.3
Subtracting 0 from 0 leaves us 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.

Advancing to step 9:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17210.3
Subtracting 0 from 0 leaves us 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.

Our division results in 17210.3 with a remaining 0.0.