810256 ÷ 80 
We're looking to find how many times 80 goes into 810256.

Step 1:
80 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 80

Let's proceed to step 2:
80 goes into 81 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 80 away from 81, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 80

On to step 3:
If we divide 10 by 80, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtract 0 from 10 to get 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 80

Moving on to step 4:
80 can be fit into 102 1 times, resulting in a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 101.0
If we take 80 away from 102, we end up with 22.
Include the next digit (5) from the dividend after 22, then repeat: 225 / 80

Let's proceed to step 5:
When dividing 225 by 80, we get 2 with a remainder of 65.
The next digit of our result is 2. 
Result so far: 1012.0
Subtract 160 from 225 to get 65.
Append the next digit (6) from the dividend to 65 and continue with: 656 / 80

Advancing to step 6:
80 can be fit into 656 8 times, resulting in a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 10128.0
Subtracting 640 from 656 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
80 can be fit into 160 2 times, resulting in a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 10128.2
If we subtract 160 from 160, 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.

Step 8:
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: 10128.2
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.

Step 9:
0 divided by 80 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10128.2
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 outcome is 10128.2, with a leftover of 0.0.