We look at the division of 193387 by 91 
The aim is to understand the frequency of 91 in 193387.

Step 1:
If we divide 1 by 91, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 91

On to step 2:
When dividing 19 by 91, we get 0 with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 91

Step 3:
91 can be fit into 193 2 times, resulting in a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 182 from 193 to get 11.
Fetch the next digit (3) from the dividend, attach it to 11 and continue: 113 / 91

Step 4:
91 goes into 113 1 times with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 21.0
Subtracting 91 from 113 leaves us with 22.
Fetch the next digit (8) from the dividend, attach it to 22 and continue: 228 / 91

Going ahead to step 5:
If we divide 228 by 91, we get 2 and a remainder of 46.
Use 2 as the next digit of our solution. 
Result so far: 212.0
Subtracting 182 from 228 leaves us with 46.
Bring next digit (7) of the dividend behind the 46 and repeat the process: 467 / 91

Going ahead to step 6:
91 goes into 467 5 times with a remainder of 12.
The next digit of our result is 5. 
Result so far: 2125.0
If we subtract 455 from 467, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
91 can be fit into 120 1 times, resulting in a remainder of 29.
The next digit of our result is 1. 
Result so far: 2125.1
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.

Step 8:
91 goes into 290 3 times with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 2125.13
Deduct 273 from 290 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 9:
The number 91 fits into 170 1 times, leaving a remainder of 79.
The number 1 becomes the next digit in our result. 
Result so far: 2125.131
The remainder is 79 after subtracting 91 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

On to step 10:
The number 91 fits into 790 8 times, leaving a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 2125.1318
Deduct 728 from 790 and we're left 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.

Going ahead to step 11:
When dividing 620 by 91, we get 6 with a remainder of 74.
The next digit of our result is 6. 
Result so far: 2125.13186
Deduct 546 from 620 and we're left with 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 12:
The number 91 fits into 740 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 2125.131868
If we subtract 728 from 740, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 13:
If we divide 120 by 91, we get 1 and a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 2125.1318681
If we subtract 91 from 120, we 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.

Step 14:
The number 91 fits into 290 3 times, leaving a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 2125.13186813
If we take 273 away from 290, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

In conclusion, the division gives 2125.13186813 with a balance of 1.7e-08.