228763 ÷ 91 
The aim is to understand the frequency of 91 in 228763.

Moving on to step 1:
2 divided by 91 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 91

Going ahead to step 2:
22 divided by 91 is 0 with a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 22 after subtracting 0 from 22.
Append the next digit (8) from the dividend to 22 and continue with: 228 / 91

Advancing to step 3:
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: 2.0
The remainder is 46 after subtracting 182 from 228.
Grab the next digit (7) from the dividend, add it to 46, then carry on: 467 / 91

Going ahead to step 4:
The number 91 fits into 467 5 times, leaving a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 25.0
Deduct 455 from 467 and we're left with 12.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 91

On to step 5:
If we divide 126 by 91, we get 1 and a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 251.0
If we take 91 away from 126, we end up with 35.
Take the next digit (3) from the dividend and append it to 35, then repeat: 353 / 91

On to step 6:
The number 91 fits into 353 3 times, leaving a remainder of 80.
The next digit of our result is 3. 
Result so far: 2513.0
Deduct 273 from 353 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.

Advancing to step 7:
800 divided by 91 is 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 2513.8
The remainder is 72 after subtracting 728 from 800.
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:
91 goes into 720 7 times with a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 2513.87
Subtract 637 from 720 to get 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:
830 divided by 91 is 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 2513.879
Subtract 819 from 830 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 10:
91 can be fit into 110 1 times, resulting in a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 2513.8791
If we take 91 away from 110, we end up 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:
190 divided by 91 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 2513.87912
The remainder is 8 after subtracting 182 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 12:
If we divide 80 by 91, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 2513.87912
Subtracting 0 from 80 leaves us 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.

Going ahead to step 13:
When dividing 800 by 91, we get 8 with a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 2513.8791208
The remainder is 72 after subtracting 728 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 14:
When dividing 720 by 91, we get 7 with a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 2513.87912087
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.

The final result is 2513.87912087 with a remainder of 8.3e-08.