Let's divide 561811 by 20
We're looking to find how many times 20 goes into 561811.

Advancing to step 1:
20 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 20

Let's proceed to step 2:
20 can be fit into 56 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 40 from 56 and we're left with 16.
Include the next digit (1) from the dividend after 16, then repeat: 161 / 20

Step 3:
20 can be fit into 161 8 times, resulting in a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 28.0
Subtract 160 from 161 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 20

On to step 4:
If we divide 18 by 20, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 280.0
If we subtract 0 from 18, we get 18.
Bring next digit (1) of the dividend behind the 18 and repeat the process: 181 / 20

Moving on to step 5:
20 goes into 181 9 times with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 2809.0
Deduct 180 from 181 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 20

Step 6:
The number 20 fits into 11 0 times, leaving a remainder of 11.
The next digit of our result is 0. 
Result so far: 28090.0
Subtract 0 from 11 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 7:
20 goes into 110 5 times with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 28090.5
Deduct 100 from 110 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.

Moving on 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: 28090.55
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.

The quotient of the division is 28090.55, and the remainder is 0.0.