We divide 87081999 by 80
We want to divide 87081999 by 80.

Going ahead to step 1:
The number 80 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 80

Let's proceed to step 2:
When dividing 87 by 80, we get 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 80 from 87 to get 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 80

Advancing to step 3:
80 can be fit into 70 0 times, resulting in a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 70, we end up with 70.
Take the next digit (8) from the dividend and append it to 70, then repeat: 708 / 80

Going ahead to step 4:
If we divide 708 by 80, we get 8 and a remainder of 68.
Write down 8 as next digit of the result. 
Result so far: 108.0
Subtracting 640 from 708 leaves us with 68.
Fetch the next digit (1) from the dividend, attach it to 68 and continue: 681 / 80

Step 5:
The number 80 fits into 681 8 times, leaving a remainder of 41.
Use 8 as the next digit of our solution. 
Result so far: 1088.0
If we subtract 640 from 681, we get 41.
Grab the next digit (9) from the dividend, add it to 41, then carry on: 419 / 80

Let's proceed to step 6:
80 goes into 419 5 times with a remainder of 19.
The next digit of our result is 5. 
Result so far: 10885.0
If we subtract 400 from 419, we get 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 80

Going ahead to step 7:
80 goes into 199 2 times with a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 108852.0
Subtracting 160 from 199 leaves us with 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 80

Advancing to step 8:
The number 80 fits into 399 4 times, leaving a remainder of 79.
The number 4 becomes the next digit in our result. 
Result so far: 1088524.0
Subtracting 320 from 399 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 9:
If we divide 790 by 80, we get 9 and a remainder of 70.
The next digit of our result is 9. 
Result so far: 1088524.9
Subtracting 720 from 790 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
The number 80 fits into 700 8 times, leaving a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 1088524.98
Subtract 640 from 700 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 11:
80 goes into 600 7 times with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 1088524.987
Subtracting 560 from 600 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.
The number 5 becomes the next digit in our result. 
Result so far: 1088524.9875
Subtract 400 from 400 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 13:
If we divide 0 by 80, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1088524.9875
If we subtract 0 from 0, we get 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 14:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1088524.9875
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 1088524.9875, with a leftover of 0.0.