80561712 ÷ 287 
We want to divide 80561712 by 287.

Step 1:
When dividing 8 by 287, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 287

On to step 2:
If we divide 80 by 287, we get 0 and a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Include the next digit (5) from the dividend after 80, then repeat: 805 / 287

Advancing to step 3:
The number 287 fits into 805 2 times, leaving a remainder of 231.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 231 after subtracting 574 from 805.
Fetch the next digit (6) from the dividend, attach it to 231 and continue: 2316 / 287

Advancing to step 4:
When dividing 2316 by 287, we get 8 with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Deduct 2296 from 2316 and we're left with 20.
Append the next digit (1) from the dividend to 20 and continue with: 201 / 287

Moving on to step 5:
287 goes into 201 0 times with a remainder of 201.
Put 0 as the next digit of the answer. 
Result so far: 280.0
The remainder is 201 after subtracting 0 from 201.
Fetch the next digit (7) from the dividend, attach it to 201 and continue: 2017 / 287

Advancing to step 6:
287 can be fit into 2017 7 times, resulting in a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 2807.0
If we subtract 2009 from 2017, we get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 287

Step 7:
287 goes into 81 0 times with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 28070.0
If we subtract 0 from 81, we get 81.
Include the next digit (2) from the dividend after 81, then repeat: 812 / 287

Step 8:
If we divide 812 by 287, we get 2 and a remainder of 238.
Write down 2 as next digit of the result. 
Result so far: 280702.0
The remainder is 238 after subtracting 574 from 812.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Let's proceed to step 9:
287 goes into 2380 8 times with a remainder of 84.
The next digit of our result is 8. 
Result so far: 280702.8
Deduct 2296 from 2380 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 10:
287 goes into 840 2 times with a remainder of 266.
The number 2 becomes the next digit in our result. 
Result so far: 280702.82
If we take 574 away from 840, we end up with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Going ahead to step 11:
The number 287 fits into 2660 9 times, leaving a remainder of 77.
The next digit of our result is 9. 
Result so far: 280702.829
If we subtract 2583 from 2660, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

On to step 12:
287 can be fit into 770 2 times, resulting in a remainder of 196.
Record the quotient 2 as the next digit in the result. 
Result so far: 280702.8292
Subtracting 574 from 770 leaves us with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Advancing to step 13:
The number 287 fits into 1960 6 times, leaving a remainder of 238.
Put 6 as the next digit of the answer. 
Result so far: 280702.82926
The remainder is 238 after subtracting 1722 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 14:
287 goes into 2380 8 times with a remainder of 84.
Use 8 as the next digit of our solution. 
Result so far: 280702.829268
If we subtract 2296 from 2380, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 15:
287 goes into 840 2 times with a remainder of 266.
Put 2 as the next digit of the answer. 
Result so far: 280702.8292682
Subtracting 574 from 840 leaves us with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

On to step 16:
The number 287 fits into 2660 9 times, leaving a remainder of 77.
Write down 9 as next digit of the result. 
Result so far: 280702.82926829
Subtracting 2583 from 2660 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

In conclusion, the division gives 280702.82926829 with a balance of 7.7e-08.