We divide 810231 by 9
The aim is to understand the frequency of 9 in 810231.

Advancing to step 1:
If we divide 8 by 9, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 9

Step 2:
9 can be fit into 81 9 times, resulting in a remainder of 0.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 0 after subtracting 81 from 81.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 9

Step 3:
The number 9 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 90.0
Subtract 0 from 0 to get 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 9

Step 4:
The number 9 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 900.0
If we subtract 0 from 2, we get 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 9

On to step 5:
9 can be fit into 23 2 times, resulting in a remainder of 5.
The next digit of our result is 2. 
Result so far: 9002.0
If we subtract 18 from 23, we get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 9

Step 6:
9 goes into 51 5 times with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 90025.0
Deduct 45 from 51 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
9 can be fit into 60 6 times, resulting in a remainder of 6.
The next digit of our result is 6. 
Result so far: 90025.6
The remainder is 6 after subtracting 54 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
9 can be fit into 60 6 times, resulting in a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 90025.66
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 90025.66 with a balance of 0.006.