510708 ÷ 20 
We want to figure out the number of times 510708 can be divided by 20.

Moving on to step 1:
The number 20 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 20

Going ahead to step 2:
The number 20 fits into 51 2 times, leaving a remainder of 11.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 40 from 51 to get 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 20

Let's proceed to step 3:
20 can be fit into 110 5 times, resulting in a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
If we subtract 100 from 110, we get 10.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 20

Advancing to step 4:
107 divided by 20 is 5 with a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 255.0
Subtract 100 from 107 to get 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 20

Going ahead to step 5:
The number 20 fits into 70 3 times, leaving a remainder of 10.
The next digit of our result is 3. 
Result so far: 2553.0
The remainder is 10 after subtracting 60 from 70.
Include the next digit (8) from the dividend after 10, then repeat: 108 / 20

Moving on to step 6:
20 can be fit into 108 5 times, resulting in a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 25535.0
Deduct 100 from 108 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
The number 20 fits into 80 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 25535.4
Deduct 80 from 80 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.

On to step 8:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 25535.4
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 9:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25535.4
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.

In conclusion, the division gives 25535.4 with a balance of 0.0.