We look at the division of 865857 by 80 
We're looking to find how many times 80 goes into 865857.

Advancing to step 1:
If we divide 8 by 80, we get 0 and 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.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 80

Advancing to step 2:
If we divide 86 by 80, we get 1 and a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 80 from 86, we get 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 80

Step 3:
65 divided by 80 is 0 with a remainder of 65.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 65, we end up with 65.
Grab the next digit (8) from the dividend, add it to 65, then carry on: 658 / 80

Step 4:
658 divided by 80 is 8 with a remainder of 18.
The next digit of our result is 8. 
Result so far: 108.0
Subtracting 640 from 658 leaves us with 18.
Take the next digit (5) from the dividend and append it to 18, then repeat: 185 / 80

Step 5:
If we divide 185 by 80, we get 2 and a remainder of 25.
Use 2 as the next digit of our solution. 
Result so far: 1082.0
Deduct 160 from 185 and we're left with 25.
Grab the next digit (7) from the dividend, add it to 25, then carry on: 257 / 80

Moving on to step 6:
The number 80 fits into 257 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 10823.0
If we subtract 240 from 257, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
170 divided by 80 is 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 10823.2
If we subtract 160 from 170, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
When dividing 100 by 80, we get 1 with a remainder of 20.
The next digit of our result is 1. 
Result so far: 10823.21
Subtracting 80 from 100 leaves us 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.

On to step 9:
200 divided by 80 is 2 with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 10823.212
Deduct 160 from 200 and we're left 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 10:
80 goes into 400 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 10823.2125
Deduct 400 from 400 and we're left 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 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10823.2125
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.

On to step 12:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10823.2125
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 final result is 10823.2125 with a remainder of 0.0.