815740 divided by 80 
We want to figure out the number of times 815740 can be divided by 80.

On to 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
Subtract 0 from 8 to get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 80

Going ahead to step 2:
The number 80 fits into 81 1 times, leaving a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 80 from 81 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 80

On to step 3:
80 goes into 15 0 times with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 15 leaves us with 15.
Grab the next digit (7) from the dividend, add it to 15, then carry on: 157 / 80

On to step 4:
80 can be fit into 157 1 times, resulting in a remainder of 77.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
If we subtract 80 from 157, we get 77.
Take the next digit (4) from the dividend and append it to 77, then repeat: 774 / 80

Going ahead to step 5:
When dividing 774 by 80, we get 9 with a remainder of 54.
Use 9 as the next digit of our solution. 
Result so far: 1019.0
Subtract 720 from 774 to get 54.
Include the next digit (0) from the dividend after 54, then repeat: 540 / 80

Going ahead to step 6:
540 divided by 80 is 6 with a remainder of 60.
The next digit of our result is 6. 
Result so far: 10196.0
The remainder is 60 after subtracting 480 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 7:
When dividing 600 by 80, we get 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 10196.7
Subtracting 560 from 600 leaves us 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.

On to step 8:
If we divide 400 by 80, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 10196.75
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.

Moving on to step 9:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10196.75
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.

Let's proceed to step 10:
If we divide 0 by 80, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10196.75
If we subtract 0 from 0, 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.

The final result is 10196.75 with a remainder of 0.0.