We divide 869391 by 81
We're looking to find how many times 81 goes into 869391.

Moving on to step 1:
81 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 81

Moving on to step 2:
When dividing 86 by 81, we get 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 5 after subtracting 81 from 86.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 81

On to step 3:
The number 81 fits into 59 0 times, leaving a remainder of 59.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 59, we get 59.
Append the next digit (3) from the dividend to 59 and continue with: 593 / 81

Step 4:
The number 81 fits into 593 7 times, leaving a remainder of 26.
The number 7 becomes the next digit in our result. 
Result so far: 107.0
If we take 567 away from 593, we end up with 26.
Fetch the next digit (9) from the dividend, attach it to 26 and continue: 269 / 81

Going ahead to step 5:
81 can be fit into 269 3 times, resulting in a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 1073.0
Subtract 243 from 269 to get 26.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 81

Let's proceed to step 6:
81 goes into 261 3 times with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 10733.0
Subtracting 243 from 261 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
81 goes into 180 2 times with a remainder of 18.
The next digit of our result is 2. 
Result so far: 10733.2
The remainder is 18 after subtracting 162 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 8:
The number 81 fits into 180 2 times, leaving a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 10733.22
If we take 162 away from 180, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 10733.22, and the remainder is 0.018.