517161 divided by 20 
We want to divide 517161 by 20.

Advancing to step 1:
If we divide 5 by 20, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 20

Going ahead to step 2:
20 can be fit into 51 2 times, resulting in a remainder of 11.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 11 after subtracting 40 from 51.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 20

Let's proceed to step 3:
117 divided by 20 is 5 with a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we take 100 away from 117, we end up with 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 20

On to step 4:
The number 20 fits into 171 8 times, leaving a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 258.0
If we subtract 160 from 171, we get 11.
Bring next digit (6) of the dividend behind the 11 and repeat the process: 116 / 20

On to step 5:
116 divided by 20 is 5 with a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 2585.0
Deduct 100 from 116 and we're left with 16.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 20

Advancing to step 6:
20 goes into 161 8 times with a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 25858.0
If we take 160 away from 161, we end up 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.

Advancing to step 7:
The number 20 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 25858.0
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.

Going ahead to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 25858.05
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.

Let's proceed to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25858.05
Subtract 0 from 0 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.

Let's proceed to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25858.05
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.

The final outcome is 25858.05, with a leftover of 0.0.