We look at the division of 23331556 by 9 
The aim is to understand the frequency of 9 in 23331556.

Let's proceed to step 1:
2 divided by 9 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 9

Let's proceed to step 2:
9 goes into 23 2 times with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 18 from 23 and we're left with 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 9

Advancing to step 3:
When dividing 53 by 9, we get 5 with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtract 45 from 53 to get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 9

Going ahead to step 4:
When dividing 83 by 9, we get 9 with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 259.0
Deduct 81 from 83 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 9

Advancing to step 5:
The number 9 fits into 21 2 times, leaving a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 2592.0
Deduct 18 from 21 and we're left with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 9

On to step 6:
If we divide 35 by 9, we get 3 and a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 25923.0
Subtracting 27 from 35 leaves us with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 9

Let's proceed to step 7:
85 divided by 9 is 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 259239.0
If we subtract 81 from 85, we get 4.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 9

Moving on to step 8:
The number 9 fits into 46 5 times, leaving a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 2592395.0
If we subtract 45 from 46, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 9:
9 can be fit into 10 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 2592395.1
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
The number 9 fits into 10 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 2592395.11
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 2592395.11, with a leftover of 0.001.