We look at the division of 571571 by 20 
We want to figure out the number of times 571571 can be divided by 20.

Moving on to step 1:
If we divide 5 by 20, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 20

Going ahead to step 2:
When dividing 57 by 20, we get 2 with a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 40 from 57 to get 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 20

Step 3:
171 divided by 20 is 8 with a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 28.0
If we subtract 160 from 171, we get 11.
Include the next digit (5) from the dividend after 11, then repeat: 115 / 20

On to step 4:
When dividing 115 by 20, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 285.0
Subtract 100 from 115 to get 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 20

Let's proceed to step 5:
20 goes into 157 7 times with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 2857.0
Deduct 140 from 157 and we're left with 17.
Fetch the next digit (1) from the dividend, attach it to 17 and continue: 171 / 20

Step 6:
When dividing 171 by 20, we get 8 with a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 28578.0
If we take 160 away from 171, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
The number 20 fits into 110 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 28578.5
The remainder is 10 after subtracting 100 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 28578.55
Subtract 100 from 100 to 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 28578.55, with a leftover of 0.0.