521340 divided by 30 
Let's see how many times 30 fits into 521340.

Step 1:
30 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 30

Moving on to step 2:
30 goes into 52 1 times with a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 30 from 52 to get 22.
Include the next digit (1) from the dividend after 22, then repeat: 221 / 30

On to step 3:
30 can be fit into 221 7 times, resulting in a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Deduct 210 from 221 and we're left with 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 30

Moving on to step 4:
If we divide 113 by 30, we get 3 and a remainder of 23.
Write down 3 as next digit of the result. 
Result so far: 173.0
Subtracting 90 from 113 leaves us with 23.
Grab the next digit (4) from the dividend, add it to 23, then carry on: 234 / 30

Moving on to step 5:
234 divided by 30 is 7 with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 1737.0
Subtract 210 from 234 to get 24.
Take the next digit (0) from the dividend and append it to 24, then repeat: 240 / 30

Step 6:
If we divide 240 by 30, we get 8 and a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 17378.0
Subtracting 240 from 240 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.

Let's proceed to step 7:
When dividing 0 by 30, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17378.0
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.

Let's proceed to step 8:
30 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17378.0
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 outcome is 17378.0, with a leftover of 0.0.