We're dividing 71561 by 20 
Let's see how many times 20 fits into 71561.

On to step 1:
20 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 20

Step 2:
If we divide 71 by 20, we get 3 and a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 60 from 71, we get 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 20

Let's proceed to step 3:
20 can be fit into 115 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
If we take 100 away from 115, we end up with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 20

Advancing to step 4:
If we divide 156 by 20, we get 7 and a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 357.0
If we subtract 140 from 156, we get 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 20

Going ahead to step 5:
161 divided by 20 is 8 with a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 3578.0
Deduct 160 from 161 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 6:
The number 20 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 3578.0
If we subtract 0 from 10, we 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 7:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 3578.05
If we take 100 away from 100, 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 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3578.05
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.

Let's proceed to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 3578.05
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 final outcome is 3578.05, with a leftover of 0.0.