843813 divided by 80 
Let's see how many times 80 fits into 843813.

On to step 1:
If we divide 8 by 80, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 80

Moving on to step 2:
The number 80 fits into 84 1 times, leaving a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 80 from 84 leaves us with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 80

Moving on to step 3:
80 goes into 43 0 times with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 43, we get 43.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 80

On to step 4:
If we divide 438 by 80, we get 5 and a remainder of 38.
Write down 5 as next digit of the result. 
Result so far: 105.0
If we subtract 400 from 438, we get 38.
Fetch the next digit (1) from the dividend, attach it to 38 and continue: 381 / 80

Step 5:
80 can be fit into 381 4 times, resulting in a remainder of 61.
Record the quotient 4 as the next digit in the result. 
Result so far: 1054.0
If we subtract 320 from 381, we get 61.
Include the next digit (3) from the dividend after 61, then repeat: 613 / 80

On to step 6:
80 can be fit into 613 7 times, resulting in a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 10547.0
If we subtract 560 from 613, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
If we divide 530 by 80, we get 6 and a remainder of 50.
The next digit of our result is 6. 
Result so far: 10547.6
Subtracting 480 from 530 leaves us 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.

Step 8:
When dividing 500 by 80, we get 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 10547.66
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.

The final outcome is 10547.66, with a leftover of 0.02.