We're dividing 667612 by 9 
The aim is to understand the frequency of 9 in 667612.

Advancing to step 1:
6 divided by 9 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 9

Moving on to step 2:
9 can be fit into 66 7 times, resulting in a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 63 from 66 and we're left with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 9

Let's proceed to step 3:
37 divided by 9 is 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Subtracting 36 from 37 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 9

Let's proceed to step 4:
If we divide 16 by 9, we get 1 and a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 741.0
Subtracting 9 from 16 leaves us with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 9

On to step 5:
If we divide 71 by 9, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 7417.0
Subtracting 63 from 71 leaves us with 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 9

Advancing to step 6:
9 can be fit into 82 9 times, resulting in a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 74179.0
Deduct 81 from 82 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
If we divide 10 by 9, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 74179.1
Subtracting 9 from 10 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
If we divide 10 by 9, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 74179.11
Deduct 9 from 10 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 74179.11 with a remainder of 0.001.