We're dividing 165253 by 91 
The aim is to understand the frequency of 91 in 165253.

Advancing to step 1:
The number 91 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 91

Let's proceed to step 2:
91 can be fit into 16 0 times, resulting in a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Fetch the next digit (5) from the dividend, attach it to 16 and continue: 165 / 91

On to step 3:
165 divided by 91 is 1 with a remainder of 74.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 91 away from 165, we end up with 74.
Fetch the next digit (2) from the dividend, attach it to 74 and continue: 742 / 91

Let's proceed to step 4:
742 divided by 91 is 8 with a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtracting 728 from 742 leaves us with 14.
Include the next digit (5) from the dividend after 14, then repeat: 145 / 91

Advancing to step 5:
145 divided by 91 is 1 with a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 181.0
If we take 91 away from 145, we end up with 54.
Include the next digit (3) from the dividend after 54, then repeat: 543 / 91

Going ahead to step 6:
91 goes into 543 5 times with a remainder of 88.
Use 5 as the next digit of our solution. 
Result so far: 1815.0
If we subtract 455 from 543, we 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.

Going ahead to step 7:
If we divide 880 by 91, we get 9 and a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 1815.9
Subtract 819 from 880 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 8:
When dividing 610 by 91, we get 6 with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 1815.96
Subtracting 546 from 610 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 9:
If we divide 640 by 91, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 1815.967
If we subtract 637 from 640, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 10:
The number 91 fits into 30 0 times, leaving a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 1815.967
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
The number 91 fits into 300 3 times, leaving a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 1815.96703
Subtracting 273 from 300 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 12:
When dividing 270 by 91, we get 2 with a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 1815.967032
Deduct 182 from 270 and we're left with 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:
When dividing 880 by 91, we get 9 with a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 1815.9670329
Deduct 819 from 880 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 14:
The number 91 fits into 610 6 times, leaving a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 1815.96703296
Deduct 546 from 610 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The quotient of the division is 1815.96703296, and the remainder is 6.4e-08.