We look at the division of 390513 by 30 
We want to divide 390513 by 30.

Advancing to step 1:
30 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 30

Moving on to step 2:
The number 30 fits into 39 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 9 after subtracting 30 from 39.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 30

On to step 3:
When dividing 90 by 30, we get 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtract 90 from 90 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 30

On to step 4:
5 divided by 30 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 130.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 30

Advancing to step 5:
When dividing 51 by 30, we get 1 with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 1301.0
If we subtract 30 from 51, we get 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 30

Moving on to step 6:
When dividing 213 by 30, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 13017.0
If we subtract 210 from 213, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 can be fit into 30 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 13017.1
If we subtract 30 from 30, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
0 divided by 30 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 13017.1
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
The number 30 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 13017.1
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 13017.1, with a leftover of 0.0.