81056520 ÷ 647 
We want to divide 81056520 by 647.

Step 1:
8 divided by 647 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 647

Moving on to step 2:
647 goes into 81 0 times with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Fetch the next digit (0) from the dividend, attach it to 81 and continue: 810 / 647

Step 3:
810 divided by 647 is 1 with a remainder of 163.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 163 after subtracting 647 from 810.
Include the next digit (5) from the dividend after 163, then repeat: 1635 / 647

Moving on to step 4:
647 can be fit into 1635 2 times, resulting in a remainder of 341.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 1294 from 1635 leaves us with 341.
Fetch the next digit (6) from the dividend, attach it to 341 and continue: 3416 / 647

Moving on to step 5:
The number 647 fits into 3416 5 times, leaving a remainder of 181.
The number 5 becomes the next digit in our result. 
Result so far: 125.0
The remainder is 181 after subtracting 3235 from 3416.
Fetch the next digit (5) from the dividend, attach it to 181 and continue: 1815 / 647

Step 6:
647 goes into 1815 2 times with a remainder of 521.
Record the quotient 2 as the next digit in the result. 
Result so far: 1252.0
Deduct 1294 from 1815 and we're left with 521.
Bring next digit (2) of the dividend behind the 521 and repeat the process: 5212 / 647

Moving on to step 7:
When dividing 5212 by 647, we get 8 with a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 12528.0
If we take 5176 away from 5212, we end up with 36.
Bring next digit (0) of the dividend behind the 36 and repeat the process: 360 / 647

On to step 8:
647 goes into 360 0 times with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 125280.0
If we subtract 0 from 360, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 9:
The number 647 fits into 3600 5 times, leaving a remainder of 365.
The next digit of our result is 5. 
Result so far: 125280.5
Deduct 3235 from 3600 and we're left with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Advancing to step 10:
The number 647 fits into 3650 5 times, leaving a remainder of 415.
Use 5 as the next digit of our solution. 
Result so far: 125280.55
If we subtract 3235 from 3650, we get 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

The final outcome is 125280.55, with a leftover of 0.415.