We look at the division of 622912 by 9 
The aim is to understand the frequency of 9 in 622912.

Advancing to step 1:
9 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 9

Going ahead to step 2:
If we divide 62 by 9, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 54 from 62 leaves us with 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 9

On to step 3:
82 divided by 9 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
Subtracting 81 from 82 leaves us with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 9

Let's proceed to step 4:
9 can be fit into 19 2 times, resulting in a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 692.0
The remainder is 1 after subtracting 18 from 19.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 9

On to step 5:
When dividing 11 by 9, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 6921.0
Subtract 9 from 11 to get 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 9

Step 6:
9 goes into 22 2 times with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 69212.0
If we take 18 away from 22, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
9 goes into 40 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 69212.4
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
9 can be fit into 40 4 times, resulting in a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 69212.44
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 69212.44 with a remaining 0.004.