800411 divided by 9 
The aim is to understand the frequency of 9 in 800411.

On to step 1:
When dividing 8 by 9, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 9

Step 2:
The number 9 fits into 80 8 times, leaving a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 72 from 80 to get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 9

Moving on to step 3:
9 can be fit into 80 8 times, resulting in a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
If we take 72 away from 80, we end up with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 9

Let's proceed to step 4:
When dividing 84 by 9, we get 9 with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 889.0
Subtract 81 from 84 to get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 9

On to step 5:
9 goes into 31 3 times with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 8893.0
Deduct 27 from 31 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 9

Let's proceed to step 6:
41 divided by 9 is 4 with a remainder of 5.
The next digit of our result is 4. 
Result so far: 88934.0
If we take 36 away from 41, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
50 divided by 9 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 88934.5
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
50 divided by 9 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 88934.55
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 88934.55, and the remainder is 0.005.