17702309 ÷ 91 
The aim is to understand the frequency of 91 in 17702309.

Advancing to step 1:
The number 91 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 91

Moving on to step 2:
91 goes into 17 0 times with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Grab the next digit (7) from the dividend, add it to 17, then carry on: 177 / 91

Moving on to step 3:
When dividing 177 by 91, we get 1 with a remainder of 86.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 91 from 177, we get 86.
Grab the next digit (0) from the dividend, add it to 86, then carry on: 860 / 91

On to step 4:
When dividing 860 by 91, we get 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtracting 819 from 860 leaves us with 41.
Append the next digit (2) from the dividend to 41 and continue with: 412 / 91

Advancing to step 5:
If we divide 412 by 91, we get 4 and a remainder of 48.
The next digit of our result is 4. 
Result so far: 194.0
If we take 364 away from 412, we end up with 48.
Bring next digit (3) of the dividend behind the 48 and repeat the process: 483 / 91

Step 6:
The number 91 fits into 483 5 times, leaving a remainder of 28.
Record the quotient 5 as the next digit in the result. 
Result so far: 1945.0
If we subtract 455 from 483, we get 28.
Include the next digit (0) from the dividend after 28, then repeat: 280 / 91

On to step 7:
91 can be fit into 280 3 times, resulting in a remainder of 7.
The next digit of our result is 3. 
Result so far: 19453.0
Deduct 273 from 280 and we're left with 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 91

Step 8:
91 goes into 79 0 times with a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 194530.0
If we take 0 away from 79, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 9:
790 divided by 91 is 8 with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 194530.8
If we take 728 away from 790, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 10:
When dividing 620 by 91, we get 6 with a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 194530.86
Subtract 546 from 620 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 11:
If we divide 740 by 91, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 194530.868
Deduct 728 from 740 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 12:
91 goes into 120 1 times with a remainder of 29.
The next digit of our result is 1. 
Result so far: 194530.8681
Subtract 91 from 120 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 13:
91 goes into 290 3 times with a remainder of 17.
The next digit of our result is 3. 
Result so far: 194530.86813
If we subtract 273 from 290, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 14:
91 can be fit into 170 1 times, resulting in a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 194530.868131
If we subtract 91 from 170, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 15:
91 can be fit into 790 8 times, resulting in a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 194530.8681318
If we subtract 728 from 790, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 16:
91 can be fit into 620 6 times, resulting in a remainder of 74.
The next digit of our result is 6. 
Result so far: 194530.86813186
Subtract 546 from 620 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

In conclusion, the division gives 194530.86813186 with a balance of 7.4e-08.