904073 ÷ 9 
The aim is to understand the frequency of 9 in 904073.

Moving on to step 1:
9 divided by 9 is 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 9 from 9 to get 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 9

Let's proceed to step 2:
0 divided by 9 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 0 after subtracting 0 from 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 9

On to step 3:
When dividing 4 by 9, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
If we subtract 0 from 4, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 9

On to step 4:
9 can be fit into 40 4 times, resulting in a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 1004.0
The remainder is 4 after subtracting 36 from 40.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 9

On to step 5:
47 divided by 9 is 5 with a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 10045.0
The remainder is 2 after subtracting 45 from 47.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 9

On to step 6:
23 divided by 9 is 2 with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 100452.0
Subtract 18 from 23 to 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.

Advancing to step 7:
If we divide 50 by 9, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 100452.5
If we take 45 away from 50, 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.

Advancing to step 8:
If we divide 50 by 9, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 100452.55
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.

In conclusion, the division gives 100452.55 with a balance of 0.005.