We're dividing 72149683 by 91 
The aim is to understand the frequency of 91 in 72149683.

Moving on to step 1:
7 divided by 91 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 91

Step 2:
When dividing 72 by 91, we get 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (1) of the dividend behind the 72 and repeat the process: 721 / 91

Step 3:
721 divided by 91 is 7 with a remainder of 84.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 637 away from 721, we end up with 84.
Append the next digit (4) from the dividend to 84 and continue with: 844 / 91

Going ahead to step 4:
The number 91 fits into 844 9 times, leaving a remainder of 25.
Record the quotient 9 as the next digit in the result. 
Result so far: 79.0
The remainder is 25 after subtracting 819 from 844.
Bring next digit (9) of the dividend behind the 25 and repeat the process: 259 / 91

Advancing to step 5:
91 can be fit into 259 2 times, resulting in a remainder of 77.
The number 2 becomes the next digit in our result. 
Result so far: 792.0
Subtracting 182 from 259 leaves us with 77.
Include the next digit (6) from the dividend after 77, then repeat: 776 / 91

Going ahead to step 6:
The number 91 fits into 776 8 times, leaving a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 7928.0
If we subtract 728 from 776, we get 48.
Take the next digit (8) from the dividend and append it to 48, then repeat: 488 / 91

Let's proceed to step 7:
The number 91 fits into 488 5 times, leaving a remainder of 33.
The number 5 becomes the next digit in our result. 
Result so far: 79285.0
Deduct 455 from 488 and we're left with 33.
Include the next digit (3) from the dividend after 33, then repeat: 333 / 91

On to step 8:
91 goes into 333 3 times with a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 792853.0
If we take 273 away from 333, we end up 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.

Step 9:
91 can be fit into 600 6 times, resulting in a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 792853.6
If we take 546 away from 600, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 10:
91 can be fit into 540 5 times, resulting in a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 792853.65
If we subtract 455 from 540, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 11:
91 goes into 850 9 times with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 792853.659
Subtract 819 from 850 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 12:
91 can be fit into 310 3 times, resulting in a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 792853.6593
Subtract 273 from 310 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 13:
If we divide 370 by 91, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 792853.65934
Subtracting 364 from 370 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 14:
91 can be fit into 60 0 times, resulting in a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 792853.65934
If we take 0 away from 60, we end up 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.

On to step 15:
91 goes into 600 6 times with a remainder of 54.
The next digit of our result is 6. 
Result so far: 792853.6593406
The remainder is 54 after subtracting 546 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 16:
When dividing 540 by 91, we get 5 with a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 792853.65934065
The remainder is 85 after subtracting 455 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

After the division, we end up with 792853.65934065 and a remainder of 8.5e-08.