We divide 37864 by 91
The aim is to understand the frequency of 91 in 37864.

Going ahead to step 1:
If we divide 3 by 91, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 91

Step 2:
When dividing 37 by 91, we get 0 with a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 37, we get 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 91

Advancing to step 3:
91 can be fit into 378 4 times, resulting in a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 14 after subtracting 364 from 378.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 91

Step 4:
If we divide 146 by 91, we get 1 and a remainder of 55.
Use 1 as the next digit of our solution. 
Result so far: 41.0
If we subtract 91 from 146, we get 55.
Append the next digit (4) from the dividend to 55 and continue with: 554 / 91

Advancing to step 5:
If we divide 554 by 91, we get 6 and a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 416.0
The remainder is 8 after subtracting 546 from 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 6:
The number 91 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 416.0
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 7:
The number 91 fits into 800 8 times, leaving a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 416.08
Subtract 728 from 800 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 8:
When dividing 720 by 91, we get 7 with a remainder of 83.
The number 7 becomes the next digit in our result. 
Result so far: 416.087
Subtracting 637 from 720 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Moving on to step 9:
If we divide 830 by 91, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 416.0879
Deduct 819 from 830 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 10:
91 can be fit into 110 1 times, resulting in a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 416.08791
Deduct 91 from 110 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 11:
When dividing 190 by 91, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 416.087912
Subtracting 182 from 190 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
The number 91 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 416.087912
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 13:
800 divided by 91 is 8 with a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 416.08791208
If we take 728 away from 800, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 416.08791208 with a remaining 7.2e-08.