We're dividing 512379 by 20 
We want to divide 512379 by 20.

On to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 20

Step 2:
51 divided by 20 is 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 40 away from 51, we end up with 11.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 20

Advancing to step 3:
20 goes into 112 5 times with a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 25.0
The remainder is 12 after subtracting 100 from 112.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 20

Step 4:
If we divide 123 by 20, we get 6 and a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 256.0
Subtract 120 from 123 to get 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 20

On to step 5:
20 goes into 37 1 times with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 2561.0
If we take 20 away from 37, we end up with 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 20

On to step 6:
20 goes into 179 8 times with a remainder of 19.
Put 8 as the next digit of the answer. 
Result so far: 25618.0
Subtracting 160 from 179 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 7:
20 goes into 190 9 times with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 25618.9
Deduct 180 from 190 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 25618.95
The remainder is 0 after subtracting 100 from 100.
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 9:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25618.95
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.

On to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25618.95
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.

The final outcome is 25618.95, with a leftover of 0.0.