We divide 103912 by 9
The aim is to understand the frequency of 9 in 103912.

Let's proceed to step 1:
The number 9 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 9

Let's proceed to step 2:
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: 1.0
Deduct 9 from 10 and we're left with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 9

Step 3:
If we divide 13 by 9, we get 1 and a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 11.0
The remainder is 4 after subtracting 9 from 13.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 9

Going ahead to step 4:
9 goes into 49 5 times with a remainder of 4.
The next digit of our result is 5. 
Result so far: 115.0
The remainder is 4 after subtracting 45 from 49.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 9

Moving on to step 5:
The number 9 fits into 41 4 times, leaving a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 1154.0
If we take 36 away from 41, we end up with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 9

Advancing to step 6:
9 goes into 52 5 times with a remainder of 7.
Record the quotient 5 as the next digit in the result. 
Result so far: 11545.0
If we subtract 45 from 52, we 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.

On to step 7:
If we divide 70 by 9, we get 7 and a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 11545.7
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.

Let's proceed to step 8:
70 divided by 9 is 7 with a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 11545.77
Subtracting 63 from 70 leaves us 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 outcome is 11545.77, with a leftover of 0.007.