167933 divided by 91 
The aim is to understand the frequency of 91 in 167933.

On to step 1:
1 divided by 91 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 91

Step 2:
91 goes into 16 0 times with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Take the next digit (7) from the dividend and append it to 16, then repeat: 167 / 91

Moving on to step 3:
91 can be fit into 167 1 times, resulting in a remainder of 76.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 91 from 167 leaves us with 76.
Take the next digit (9) from the dividend and append it to 76, then repeat: 769 / 91

Step 4:
The number 91 fits into 769 8 times, leaving a remainder of 41.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we subtract 728 from 769, we get 41.
Bring next digit (3) of the dividend behind the 41 and repeat the process: 413 / 91

Let's proceed to step 5:
413 divided by 91 is 4 with a remainder of 49.
Write down 4 as next digit of the result. 
Result so far: 184.0
Subtract 364 from 413 to get 49.
Include the next digit (3) from the dividend after 49, then repeat: 493 / 91

Advancing to step 6:
91 goes into 493 5 times with a remainder of 38.
Use 5 as the next digit of our solution. 
Result so far: 1845.0
If we take 455 away from 493, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
380 divided by 91 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 1845.4
Subtract 364 from 380 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
When dividing 160 by 91, we get 1 with a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 1845.41
The remainder is 69 after subtracting 91 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 9:
91 goes into 690 7 times with a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 1845.417
Deduct 637 from 690 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 10:
If we divide 530 by 91, we get 5 and a remainder of 75.
The next digit of our result is 5. 
Result so far: 1845.4175
Subtract 455 from 530 to 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.

On to step 11:
91 goes into 750 8 times with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 1845.41758
Deduct 728 from 750 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 12:
91 can be fit into 220 2 times, resulting in a remainder of 38.
The next digit of our result is 2. 
Result so far: 1845.417582
Subtract 182 from 220 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 13:
91 can be fit into 380 4 times, resulting in a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 1845.4175824
Subtract 364 from 380 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
If we divide 160 by 91, we get 1 and a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 1845.41758241
Subtract 91 from 160 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

After the division, we end up with 1845.41758241 and a remainder of 6.9e-08.