We divide 287965 by 91
The aim is to understand the frequency of 91 in 287965.

Let's proceed to step 1:
If we divide 2 by 91, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 91

Let's proceed to step 2:
91 goes into 28 0 times with a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Bring next digit (7) of the dividend behind the 28 and repeat the process: 287 / 91

Step 3:
91 goes into 287 3 times with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 273 from 287 leaves us with 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 91

Let's proceed to step 4:
91 can be fit into 149 1 times, resulting in a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 31.0
If we subtract 91 from 149, we get 58.
Append the next digit (6) from the dividend to 58 and continue with: 586 / 91

On to step 5:
91 goes into 586 6 times with a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 316.0
Subtract 546 from 586 to get 40.
Grab the next digit (5) from the dividend, add it to 40, then carry on: 405 / 91

Step 6:
When dividing 405 by 91, we get 4 with a remainder of 41.
Write down 4 as next digit of the result. 
Result so far: 3164.0
Subtracting 364 from 405 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 7:
410 divided by 91 is 4 with a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 3164.4
Subtracting 364 from 410 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 8:
460 divided by 91 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 3164.45
If we subtract 455 from 460, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
91 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 3164.45
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
91 can be fit into 500 5 times, resulting in a remainder of 45.
The next digit of our result is 5. 
Result so far: 3164.4505
Deduct 455 from 500 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 11:
450 divided by 91 is 4 with a remainder of 86.
The next digit of our result is 4. 
Result so far: 3164.45054
If we subtract 364 from 450, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 12:
91 goes into 860 9 times with a remainder of 41.
The next digit of our result is 9. 
Result so far: 3164.450549
Subtracting 819 from 860 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 13:
410 divided by 91 is 4 with a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 3164.4505494
Deduct 364 from 410 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 14:
91 can be fit into 460 5 times, resulting in a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 3164.45054945
Deduct 455 from 460 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 3164.45054945, with a leftover of 5e-09.