Let's divide 663297 by 9
The aim is to understand the frequency of 9 in 663297.

Let's proceed to step 1:
When dividing 6 by 9, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 9

Step 2:
If we divide 66 by 9, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 63 from 66, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 9

Going ahead to step 3:
9 can be fit into 33 3 times, resulting in a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 73.0
Subtracting 27 from 33 leaves us with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 9

On to step 4:
9 goes into 62 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 736.0
If we take 54 away from 62, we end up with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 9

Advancing to step 5:
The number 9 fits into 89 9 times, leaving a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 7369.0
Subtracting 81 from 89 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 9

Advancing to step 6:
9 goes into 87 9 times with a remainder of 6.
The next digit of our result is 9. 
Result so far: 73699.0
If we subtract 81 from 87, 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.

Going ahead to step 7:
60 divided by 9 is 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 73699.6
Subtracting 54 from 60 leaves us 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.

Step 8:
When dividing 60 by 9, we get 6 with a remainder of 6.
The next digit of our result is 6. 
Result so far: 73699.66
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.

Our division results in 73699.66 with a remaining 0.006.