We're dividing 288840 by 9 
The aim is to understand the frequency of 9 in 288840.

Going ahead to step 1:
The number 9 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 9

Advancing to step 2:
28 divided by 9 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 27 from 28, we get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 9

Let's proceed to step 3:
9 can be fit into 18 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 32.0
The remainder is 0 after subtracting 18 from 18.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 9

Going ahead to step 4:
8 divided by 9 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 320.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 9

On to step 5:
If we divide 84 by 9, we get 9 and a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 3209.0
Deduct 81 from 84 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 9

Let's proceed to step 6:
The number 9 fits into 30 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 32093.0
If we subtract 27 from 30, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
9 goes into 30 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 32093.3
Subtracting 27 from 30 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 8:
The number 9 fits into 30 3 times, leaving a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 32093.33
The remainder is 3 after subtracting 27 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 32093.33 with a remaining 0.003.