520911 divided by 81 
Let's see how many times 81 fits into 520911.

On to step 1:
The number 81 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 81

On to step 2:
If we divide 52 by 81, we get 0 and a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Take the next digit (0) from the dividend and append it to 52, then repeat: 520 / 81

Advancing to step 3:
The number 81 fits into 520 6 times, leaving a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 486 from 520, we get 34.
Fetch the next digit (9) from the dividend, attach it to 34 and continue: 349 / 81

Going ahead to step 4:
349 divided by 81 is 4 with a remainder of 25.
The next digit of our result is 4. 
Result so far: 64.0
The remainder is 25 after subtracting 324 from 349.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 81

Step 5:
81 goes into 251 3 times with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 643.0
Deduct 243 from 251 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 81

Advancing to step 6:
81 divided by 81 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 6431.0
The remainder is 0 after subtracting 81 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
81 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 6431.0
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.

Advancing to step 8:
The number 81 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6431.0
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 6431.0, with a leftover of 0.0.