817557 ÷ 80 
We're looking to find how many times 80 goes into 817557.

On to step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 80

On to step 2:
80 can be fit into 81 1 times, resulting in a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 1 after subtracting 80 from 81.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 80

On to step 3:
80 can be fit into 17 0 times, resulting in a remainder of 17.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 17 and we're left with 17.
Fetch the next digit (5) from the dividend, attach it to 17 and continue: 175 / 80

Moving on to step 4:
80 goes into 175 2 times with a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
If we take 160 away from 175, we end up with 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 80

Moving on to step 5:
If we divide 155 by 80, we get 1 and a remainder of 75.
Record the quotient 1 as the next digit in the result. 
Result so far: 1021.0
If we subtract 80 from 155, we get 75.
Fetch the next digit (7) from the dividend, attach it to 75 and continue: 757 / 80

Going ahead to step 6:
When dividing 757 by 80, we get 9 with a remainder of 37.
Write down 9 as next digit of the result. 
Result so far: 10219.0
Deduct 720 from 757 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 7:
80 can be fit into 370 4 times, resulting in a remainder of 50.
The next digit of our result is 4. 
Result so far: 10219.4
If we take 320 away from 370, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 8:
If we divide 500 by 80, we get 6 and a remainder of 20.
The next digit of our result is 6. 
Result so far: 10219.46
The remainder is 20 after subtracting 480 from 500.
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:
The number 80 fits into 200 2 times, leaving a remainder of 40.
The next digit of our result is 2. 
Result so far: 10219.462
If we take 160 away from 200, we end up 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.

Going ahead to step 10:
If we divide 400 by 80, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 10219.4625
The remainder is 0 after subtracting 400 from 400.
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 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10219.4625
Deduct 0 from 0 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.

Let's proceed to step 12:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10219.4625
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.

Our division results in 10219.4625 with a remaining 0.0.