We look at the division of 813662 by 80 
We're looking to find how many times 80 goes into 813662.

Step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 80

Going ahead to step 2:
When dividing 81 by 80, we get 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 1 after subtracting 80 from 81.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 80

Going ahead to step 3:
When dividing 13 by 80, we get 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 13 leaves us with 13.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 80

Advancing to step 4:
136 divided by 80 is 1 with a remainder of 56.
Put 1 as the next digit of the answer. 
Result so far: 101.0
Subtract 80 from 136 to get 56.
Include the next digit (6) from the dividend after 56, then repeat: 566 / 80

Let's proceed to step 5:
The number 80 fits into 566 7 times, leaving a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 1017.0
Subtract 560 from 566 to get 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 80

Going ahead to step 6:
80 can be fit into 62 0 times, resulting in a remainder of 62.
Write down 0 as next digit of the result. 
Result so far: 10170.0
Subtract 0 from 62 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 7:
80 can be fit into 620 7 times, resulting in a remainder of 60.
The next digit of our result is 7. 
Result so far: 10170.7
If we take 560 away from 620, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
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: 10170.77
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 10170.77 with a remainder of 0.04.