515043 divided by 20 
We want to figure out the number of times 515043 can be divided by 20.

Moving on to step 1:
20 can be fit into 5 0 times, resulting in 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.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 20

Going ahead to step 2:
If we divide 51 by 20, we get 2 and a remainder of 11.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 40 from 51, we get 11.
Include the next digit (5) from the dividend after 11, then repeat: 115 / 20

Advancing to step 3:
115 divided by 20 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 25.0
The remainder is 15 after subtracting 100 from 115.
Include the next digit (0) from the dividend after 15, then repeat: 150 / 20

Step 4:
The number 20 fits into 150 7 times, leaving a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 257.0
Subtracting 140 from 150 leaves us with 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 20

Going ahead to step 5:
20 goes into 104 5 times with a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 2575.0
The remainder is 4 after subtracting 100 from 104.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 20

Advancing to step 6:
20 goes into 43 2 times with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 25752.0
The remainder is 3 after subtracting 40 from 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
20 can be fit into 30 1 times, resulting in a remainder of 10.
The next digit of our result is 1. 
Result so far: 25752.1
Subtract 20 from 30 to 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.

Step 8:
100 divided by 20 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 25752.15
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.

On to step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25752.15
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.

Step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25752.15
Deduct 0 from 0 and we're left 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 quotient of the division is 25752.15, and the remainder is 0.0.