86312 divided by 80 
We're looking to find how many times 80 goes into 86312.

Moving on to step 1:
The number 80 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 80

Step 2:
80 can be fit into 86 1 times, resulting in a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 80 from 86 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 80

Advancing to step 3:
When dividing 63 by 80, we get 0 with a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 63 leaves us with 63.
Include the next digit (1) from the dividend after 63, then repeat: 631 / 80

Advancing to step 4:
If we divide 631 by 80, we get 7 and a remainder of 71.
Record the quotient 7 as the next digit in the result. 
Result so far: 107.0
Deduct 560 from 631 and we're left with 71.
Grab the next digit (2) from the dividend, add it to 71, then carry on: 712 / 80

Going ahead to step 5:
If we divide 712 by 80, we get 8 and a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 1078.0
If we subtract 640 from 712, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 6:
When dividing 720 by 80, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 1078.9
The remainder is 0 after subtracting 720 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1078.9
Subtracting 0 from 0 leaves us 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.

Going ahead to step 8:
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: 1078.9
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.

The quotient of the division is 1078.9, and the remainder is 0.0.