We divide 86649101 by 80
We want to divide 86649101 by 80.

Step 1:
8 divided by 80 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 80

Advancing to step 2:
80 can be fit into 86 1 times, resulting in a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 80 from 86 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 80

Going ahead to step 3:
80 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 66 to get 66.
Append the next digit (4) from the dividend to 66 and continue with: 664 / 80

Advancing to step 4:
The number 80 fits into 664 8 times, leaving a remainder of 24.
The next digit of our result is 8. 
Result so far: 108.0
Subtracting 640 from 664 leaves us with 24.
Bring next digit (9) of the dividend behind the 24 and repeat the process: 249 / 80

Step 5:
80 goes into 249 3 times with a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 1083.0
If we subtract 240 from 249, we get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 80

Let's proceed to step 6:
If we divide 91 by 80, we get 1 and a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 10831.0
If we take 80 away from 91, we end up with 11.
Grab the next digit (0) from the dividend, add it to 11, then carry on: 110 / 80

Moving on to step 7:
110 divided by 80 is 1 with a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 108311.0
Deduct 80 from 110 and we're left with 30.
Take the next digit (1) from the dividend and append it to 30, then repeat: 301 / 80

Step 8:
If we divide 301 by 80, we get 3 and a remainder of 61.
Record the quotient 3 as the next digit in the result. 
Result so far: 1083113.0
The remainder is 61 after subtracting 240 from 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 9:
80 can be fit into 610 7 times, resulting in a remainder of 50.
Write down 7 as next digit of the result. 
Result so far: 1083113.7
Subtracting 560 from 610 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
When dividing 500 by 80, we get 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 1083113.76
If we take 480 away from 500, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 1083113.762
Subtracting 160 from 200 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
If we divide 400 by 80, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1083113.7625
If we take 400 away from 400, we end up 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.

Advancing to step 13:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1083113.7625
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.

Going ahead to step 14:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1083113.7625
If we take 0 away from 0, we end up 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.

In conclusion, the division gives 1083113.7625 with a balance of 0.0.