We look at the division of 99012717 by 109 
The aim is to understand the frequency of 109 in 99012717.

Advancing to step 1:
When dividing 9 by 109, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 109

Advancing to step 2:
99 divided by 109 is 0 with a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Fetch the next digit (0) from the dividend, attach it to 99 and continue: 990 / 109

On to step 3:
The number 109 fits into 990 9 times, leaving a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 981 from 990 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 109

On to step 4:
When dividing 91 by 109, we get 0 with a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 90.0
If we subtract 0 from 91, we get 91.
Fetch the next digit (2) from the dividend, attach it to 91 and continue: 912 / 109

On to step 5:
When dividing 912 by 109, we get 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 908.0
Subtract 872 from 912 to get 40.
Bring next digit (7) of the dividend behind the 40 and repeat the process: 407 / 109

Moving on to step 6:
If we divide 407 by 109, we get 3 and a remainder of 80.
Put 3 as the next digit of the answer. 
Result so far: 9083.0
If we take 327 away from 407, we end up with 80.
Fetch the next digit (1) from the dividend, attach it to 80 and continue: 801 / 109

Moving on to step 7:
If we divide 801 by 109, we get 7 and a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 90837.0
Subtracting 763 from 801 leaves us with 38.
Append the next digit (7) from the dividend to 38 and continue with: 387 / 109

On to step 8:
If we divide 387 by 109, we get 3 and a remainder of 60.
The next digit of our result is 3. 
Result so far: 908373.0
Deduct 327 from 387 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
109 goes into 600 5 times with a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 908373.5
The remainder is 55 after subtracting 545 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 10:
109 goes into 550 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 908373.55
If we take 545 away from 550, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 908373.55 with a remaining 0.005.