We're dividing 81687026 by 109 
The aim is to understand the frequency of 109 in 81687026.

Advancing to step 1:
109 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 109

Let's proceed to step 2:
If we divide 81 by 109, we get 0 and a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 109

Step 3:
When dividing 816 by 109, we get 7 with a remainder of 53.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 763 from 816 and we're left with 53.
Take the next digit (8) from the dividend and append it to 53, then repeat: 538 / 109

Going ahead to step 4:
If we divide 538 by 109, we get 4 and a remainder of 102.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Subtract 436 from 538 to get 102.
Take the next digit (7) from the dividend and append it to 102, then repeat: 1027 / 109

On to step 5:
If we divide 1027 by 109, we get 9 and a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 749.0
If we take 981 away from 1027, we end up with 46.
Include the next digit (0) from the dividend after 46, then repeat: 460 / 109

Going ahead to step 6:
If we divide 460 by 109, we get 4 and a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 7494.0
Subtracting 436 from 460 leaves us with 24.
Fetch the next digit (2) from the dividend, attach it to 24 and continue: 242 / 109

Let's proceed to step 7:
242 divided by 109 is 2 with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 74942.0
Subtract 218 from 242 to get 24.
Fetch the next digit (6) from the dividend, attach it to 24 and continue: 246 / 109

Moving on to step 8:
246 divided by 109 is 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 749422.0
If we subtract 218 from 246, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
109 can be fit into 280 2 times, resulting in a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 749422.2
The remainder is 62 after subtracting 218 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 10:
If we divide 620 by 109, we get 5 and a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 749422.25
If we subtract 545 from 620, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 11:
750 divided by 109 is 6 with a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 749422.256
If we take 654 away from 750, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 12:
109 goes into 960 8 times with a remainder of 88.
Put 8 as the next digit of the answer. 
Result so far: 749422.2568
Subtract 872 from 960 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 13:
If we divide 880 by 109, we get 8 and a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 749422.25688
If we take 872 away from 880, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 749422.25688, with a leftover of 8e-06.