685875 ÷ 9 
The aim is to understand the frequency of 9 in 685875.

Advancing to step 1:
If we divide 6 by 9, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 9

Going ahead to step 2:
9 can be fit into 68 7 times, resulting in a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 63 from 68 leaves us with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 9

Going ahead to step 3:
When dividing 55 by 9, we get 6 with 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.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 9

Moving on to step 4:
9 can be fit into 18 2 times, resulting in a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 762.0
The remainder is 0 after subtracting 18 from 18.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 9

Moving on to step 5:
The number 9 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 7620.0
If we subtract 0 from 7, we get 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 9

Advancing to step 6:
The number 9 fits into 75 8 times, leaving a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 76208.0
The remainder is 3 after subtracting 72 from 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
9 goes into 30 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 76208.3
If we subtract 27 from 30, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 8:
9 can be fit into 30 3 times, resulting in a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 76208.33
Subtracting 27 from 30 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final result is 76208.33 with a remainder of 0.003.