165242 ÷ 91 
The aim is to understand the frequency of 91 in 165242.

Step 1:
If we divide 1 by 91, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 91

Going ahead to step 2:
When dividing 16 by 91, we get 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 91

On to step 3:
91 can be fit into 165 1 times, resulting in a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 74 after subtracting 91 from 165.
Grab the next digit (2) from the dividend, add it to 74, then carry on: 742 / 91

Step 4:
91 goes into 742 8 times with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 18.0
The remainder is 14 after subtracting 728 from 742.
Bring next digit (4) of the dividend behind the 14 and repeat the process: 144 / 91

Moving on to step 5:
91 can be fit into 144 1 times, resulting in a remainder of 53.
Use 1 as the next digit of our solution. 
Result so far: 181.0
Subtracting 91 from 144 leaves us with 53.
Take the next digit (2) from the dividend and append it to 53, then repeat: 532 / 91

On to step 6:
When dividing 532 by 91, we get 5 with a remainder of 77.
The next digit of our result is 5. 
Result so far: 1815.0
Subtracting 455 from 532 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 7:
If we divide 770 by 91, we get 8 and a remainder of 42.
The next digit of our result is 8. 
Result so far: 1815.8
Subtract 728 from 770 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 8:
When dividing 420 by 91, we get 4 with a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 1815.84
Deduct 364 from 420 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 9:
The number 91 fits into 560 6 times, leaving a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 1815.846
Subtract 546 from 560 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 10:
140 divided by 91 is 1 with a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 1815.8461
If we take 91 away from 140, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 11:
If we divide 490 by 91, we get 5 and a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 1815.84615
Subtract 455 from 490 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 12:
When dividing 350 by 91, we get 3 with a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 1815.846153
Subtract 273 from 350 to get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 13:
The number 91 fits into 770 8 times, leaving a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 1815.8461538
Subtract 728 from 770 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 14:
91 can be fit into 420 4 times, resulting in a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 1815.84615384
Deduct 364 from 420 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

In conclusion, the division gives 1815.84615384 with a balance of 5.6e-08.