80918806 divided by 646 
We're looking to find how many times 646 goes into 80918806.

On to step 1:
The number 646 fits into 8 0 times, leaving 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.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 646

On to step 2:
If we divide 80 by 646, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Bring next digit (9) of the dividend behind the 80 and repeat the process: 809 / 646

On to step 3:
809 divided by 646 is 1 with a remainder of 163.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 646 from 809 and we're left with 163.
Take the next digit (1) from the dividend and append it to 163, then repeat: 1631 / 646

Let's proceed to step 4:
646 goes into 1631 2 times with a remainder of 339.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 1292 from 1631 to get 339.
Bring next digit (8) of the dividend behind the 339 and repeat the process: 3398 / 646

Advancing to step 5:
The number 646 fits into 3398 5 times, leaving a remainder of 168.
The number 5 becomes the next digit in our result. 
Result so far: 125.0
Subtracting 3230 from 3398 leaves us with 168.
Bring next digit (8) of the dividend behind the 168 and repeat the process: 1688 / 646

Step 6:
The number 646 fits into 1688 2 times, leaving a remainder of 396.
Put 2 as the next digit of the answer. 
Result so far: 1252.0
If we subtract 1292 from 1688, we get 396.
Include the next digit (0) from the dividend after 396, then repeat: 3960 / 646

Step 7:
When dividing 3960 by 646, we get 6 with a remainder of 84.
Put 6 as the next digit of the answer. 
Result so far: 12526.0
Deduct 3876 from 3960 and we're left with 84.
Append the next digit (6) from the dividend to 84 and continue with: 846 / 646

Advancing to step 8:
646 goes into 846 1 times with a remainder of 200.
Put 1 as the next digit of the answer. 
Result so far: 125261.0
Subtract 646 from 846 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 9:
The number 646 fits into 2000 3 times, leaving a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 125261.3
The remainder is 62 after subtracting 1938 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 10:
The number 646 fits into 620 0 times, leaving a remainder of 620.
Use 0 as the next digit of our solution. 
Result so far: 125261.3
Subtracting 0 from 620 leaves us with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Step 11:
The number 646 fits into 6200 9 times, leaving a remainder of 386.
The next digit of our result is 9. 
Result so far: 125261.309
If we subtract 5814 from 6200, we get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Step 12:
If we divide 3860 by 646, we get 5 and a remainder of 630.
Write down 5 as next digit of the result. 
Result so far: 125261.3095
Subtracting 3230 from 3860 leaves us with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Let's proceed to step 13:
When dividing 6300 by 646, we get 9 with a remainder of 486.
Write down 9 as next digit of the result. 
Result so far: 125261.30959
Deduct 5814 from 6300 and we're left with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Step 14:
The number 646 fits into 4860 7 times, leaving a remainder of 338.
Use 7 as the next digit of our solution. 
Result so far: 125261.309597
Subtracting 4522 from 4860 leaves us with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

On to step 15:
3380 divided by 646 is 5 with a remainder of 150.
Record the quotient 5 as the next digit in the result. 
Result so far: 125261.3095975
Deduct 3230 from 3380 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 16:
If we divide 1500 by 646, we get 2 and a remainder of 208.
Put 2 as the next digit of the answer. 
Result so far: 125261.30959752
The remainder is 208 after subtracting 1292 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

The final result is 125261.30959752 with a remainder of 2.08e-07.