We look at the division of 691945 by 9 
The aim is to understand the frequency of 9 in 691945.

Advancing to step 1:
9 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 9

Advancing to step 2:
9 goes into 69 7 times with a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 63 away from 69, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 9

Let's proceed to step 3:
9 can be fit into 61 6 times, resulting in a remainder of 7.
Use 6 as the next digit of our solution. 
Result so far: 76.0
The remainder is 7 after subtracting 54 from 61.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 9

On to step 4:
The number 9 fits into 79 8 times, leaving a remainder of 7.
The number 8 becomes the next digit in our result. 
Result so far: 768.0
If we subtract 72 from 79, we get 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 9

Step 5:
When dividing 74 by 9, we get 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 7688.0
If we subtract 72 from 74, we get 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 9

Moving on to step 6:
If we divide 25 by 9, we get 2 and a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 76882.0
Subtract 18 from 25 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
9 goes into 70 7 times with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 76882.7
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
9 goes into 70 7 times with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 76882.77
Deduct 63 from 70 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final result is 76882.77 with a remainder of 0.007.