We're dividing 306124 by 9 
The aim is to understand the frequency of 9 in 306124.

Advancing to step 1:
When dividing 3 by 9, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 9

Let's proceed to step 2:
9 goes into 30 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 27 from 30, we get 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 9

Let's proceed to step 3:
If we divide 36 by 9, we get 4 and a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
Subtract 36 from 36 to get 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 9

Advancing to step 4:
1 divided by 9 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 340.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 9

Advancing to step 5:
9 can be fit into 12 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 3401.0
Subtracting 9 from 12 leaves us with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 9

On to step 6:
9 can be fit into 34 3 times, resulting in a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 34013.0
The remainder is 7 after subtracting 27 from 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
If we divide 70 by 9, we get 7 and a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 34013.7
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.

Going ahead to step 8:
9 can be fit into 70 7 times, resulting in a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 34013.77
Subtract 63 from 70 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.

Our division results in 34013.77 with a remaining 0.007.