843120 divided by 81 
Our goal is to divide 843120 by 81.

Let's proceed to step 1:
8 divided by 81 is 0 with 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.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 81

On to step 2:
81 can be fit into 84 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 81 from 84 leaves us with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 81

On to step 3:
The number 81 fits into 33 0 times, leaving a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 33, we get 33.
Fetch the next digit (1) from the dividend, attach it to 33 and continue: 331 / 81

Moving on to step 4:
331 divided by 81 is 4 with a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 104.0
Subtracting 324 from 331 leaves us with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 81

Step 5:
The number 81 fits into 72 0 times, leaving a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 1040.0
If we take 0 away from 72, we end up with 72.
Append the next digit (0) from the dividend to 72 and continue with: 720 / 81

Step 6:
81 can be fit into 720 8 times, resulting in a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 10408.0
If we take 648 away from 720, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 7:
If we divide 720 by 81, we get 8 and a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 10408.8
Subtract 648 from 720 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 8:
81 can be fit into 720 8 times, resulting in a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 10408.88
The remainder is 72 after subtracting 648 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The quotient of the division is 10408.88, and the remainder is 0.072.