520680 ÷ 81 
We want to figure out the number of times 520680 can be divided by 81.

Let's proceed to step 1:
5 divided by 81 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 81

Moving on to step 2:
The number 81 fits into 52 0 times, leaving a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 52 leaves us with 52.
Bring next digit (0) of the dividend behind the 52 and repeat the process: 520 / 81

Step 3:
When dividing 520 by 81, we get 6 with a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 486 from 520 to get 34.
Grab the next digit (6) from the dividend, add it to 34, then carry on: 346 / 81

On to step 4:
81 can be fit into 346 4 times, resulting in a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 64.0
Deduct 324 from 346 and we're left with 22.
Include the next digit (8) from the dividend after 22, then repeat: 228 / 81

Going ahead to step 5:
81 can be fit into 228 2 times, resulting in a remainder of 66.
Write down 2 as next digit of the result. 
Result so far: 642.0
If we take 162 away from 228, we end up with 66.
Bring next digit (0) of the dividend behind the 66 and repeat the process: 660 / 81

Moving on to step 6:
81 can be fit into 660 8 times, resulting in a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 6428.0
If we take 648 away from 660, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
81 can be fit into 120 1 times, resulting in a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 6428.1
Subtract 81 from 120 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 8:
81 goes into 390 4 times with a remainder of 66.
The next digit of our result is 4. 
Result so far: 6428.14
Subtract 324 from 390 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 9:
81 can be fit into 660 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 6428.148
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
If we divide 120 by 81, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 6428.1481
Subtract 81 from 120 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 11:
When dividing 390 by 81, we get 4 with a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 6428.14814
Subtract 324 from 390 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 12:
When dividing 660 by 81, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 6428.148148
The remainder is 12 after subtracting 648 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 13:
The number 81 fits into 120 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 6428.1481481
Subtract 81 from 120 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 14:
The number 81 fits into 390 4 times, leaving a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 6428.14814814
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

After the division, we end up with 6428.14814814 and a remainder of 6.6e-08.