We look at the division of 513309 by 20 
We want to divide 513309 by 20.

Going ahead to step 1:
5 divided by 20 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 20

On to step 2:
The number 20 fits into 51 2 times, leaving a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 11 after subtracting 40 from 51.
Fetch the next digit (3) from the dividend, attach it to 11 and continue: 113 / 20

Let's proceed to step 3:
20 can be fit into 113 5 times, resulting in a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 25.0
The remainder is 13 after subtracting 100 from 113.
Fetch the next digit (3) from the dividend, attach it to 13 and continue: 133 / 20

On to step 4:
If we divide 133 by 20, we get 6 and a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 256.0
Deduct 120 from 133 and we're left with 13.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 20

Step 5:
130 divided by 20 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 2566.0
Subtract 120 from 130 to get 10.
Fetch the next digit (9) from the dividend, attach it to 10 and continue: 109 / 20

Going ahead to step 6:
20 goes into 109 5 times with a remainder of 9.
Use 5 as the next digit of our solution. 
Result so far: 25665.0
Subtracting 100 from 109 leaves us with 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:
90 divided by 20 is 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 25665.4
If we subtract 80 from 90, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 25665.45
Subtracting 100 from 100 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.

Moving on to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25665.45
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.

Advancing to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 25665.45
If we subtract 0 from 0, 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.

After the division, we end up with 25665.45 and a remainder of 0.0.