We're dividing 685309 by 9 
The aim is to understand the frequency of 9 in 685309.

Advancing to step 1:
9 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 9

Advancing to step 2:
When dividing 68 by 9, we get 7 with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 63 from 68 leaves us with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 9

Step 3:
The number 9 fits into 55 6 times, leaving a remainder of 1.
The next digit of our result is 6. 
Result so far: 76.0
If we subtract 54 from 55, we get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 9

Step 4:
13 divided by 9 is 1 with a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 761.0
Deduct 9 from 13 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 9

Advancing to step 5:
40 divided by 9 is 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 7614.0
The remainder is 4 after subtracting 36 from 40.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 9

On to step 6:
9 goes into 49 5 times with a remainder of 4.
The next digit of our result is 5. 
Result so far: 76145.0
If we subtract 45 from 49, we 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.

Advancing to step 7:
When dividing 40 by 9, we get 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 76145.4
Subtracting 36 from 40 leaves us 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.

Step 8:
The number 9 fits into 40 4 times, leaving a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 76145.44
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 76145.44 and a remainder of 0.004.