Let's divide 80816491 by 647
We're looking to find how many times 647 goes into 80816491.

Step 1:
647 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 647

On to step 2:
647 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Take the next digit (8) from the dividend and append it to 80, then repeat: 808 / 647

Advancing to step 3:
The number 647 fits into 808 1 times, leaving a remainder of 161.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 647 from 808 and we're left with 161.
Fetch the next digit (1) from the dividend, attach it to 161 and continue: 1611 / 647

Moving on to step 4:
The number 647 fits into 1611 2 times, leaving a remainder of 317.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Subtracting 1294 from 1611 leaves us with 317.
Bring next digit (6) of the dividend behind the 317 and repeat the process: 3176 / 647

Step 5:
647 goes into 3176 4 times with a remainder of 588.
The number 4 becomes the next digit in our result. 
Result so far: 124.0
The remainder is 588 after subtracting 2588 from 3176.
Append the next digit (4) from the dividend to 588 and continue with: 5884 / 647

Advancing to step 6:
If we divide 5884 by 647, we get 9 and a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 1249.0
If we subtract 5823 from 5884, we get 61.
Take the next digit (9) from the dividend and append it to 61, then repeat: 619 / 647

Let's proceed to step 7:
When dividing 619 by 647, we get 0 with a remainder of 619.
Use 0 as the next digit of our solution. 
Result so far: 12490.0
Deduct 0 from 619 and we're left with 619.
Include the next digit (1) from the dividend after 619, then repeat: 6191 / 647

Step 8:
6191 divided by 647 is 9 with a remainder of 368.
Use 9 as the next digit of our solution. 
Result so far: 124909.0
If we take 5823 away from 6191, we end up with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Let's proceed to step 9:
647 can be fit into 3680 5 times, resulting in a remainder of 445.
The next digit of our result is 5. 
Result so far: 124909.5
If we take 3235 away from 3680, we end up with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Step 10:
The number 647 fits into 4450 6 times, leaving a remainder of 568.
Put 6 as the next digit of the answer. 
Result so far: 124909.56
If we subtract 3882 from 4450, we get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Going ahead to step 11:
5680 divided by 647 is 8 with a remainder of 504.
The next digit of our result is 8. 
Result so far: 124909.568
If we take 5176 away from 5680, we end up with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Let's proceed to step 12:
5040 divided by 647 is 7 with a remainder of 511.
Record the quotient 7 as the next digit in the result. 
Result so far: 124909.5687
If we subtract 4529 from 5040, we get 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Let's proceed to step 13:
If we divide 5110 by 647, we get 7 and a remainder of 581.
Put 7 as the next digit of the answer. 
Result so far: 124909.56877
If we take 4529 away from 5110, we end up with 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

Our division results in 124909.56877 with a remaining 0.000581.