We divide 228401 by 91
The aim is to understand the frequency of 91 in 228401.

Advancing to step 1:
91 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 91

Going ahead to step 2:
The number 91 fits into 22 0 times, leaving a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 22 to get 22.
Include the next digit (8) from the dividend after 22, then repeat: 228 / 91

Let's proceed to step 3:
228 divided by 91 is 2 with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 182 away from 228, we end up with 46.
Include the next digit (4) from the dividend after 46, then repeat: 464 / 91

Going ahead to step 4:
The number 91 fits into 464 5 times, leaving a remainder of 9.
Use 5 as the next digit of our solution. 
Result so far: 25.0
Subtracting 455 from 464 leaves us with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 91

On to step 5:
If we divide 90 by 91, we get 0 and a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 250.0
Deduct 0 from 90 and we're left with 90.
Bring next digit (1) of the dividend behind the 90 and repeat the process: 901 / 91

Step 6:
901 divided by 91 is 9 with a remainder of 82.
Record the quotient 9 as the next digit in the result. 
Result so far: 2509.0
Subtract 819 from 901 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 7:
820 divided by 91 is 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 2509.9
If we subtract 819 from 820, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
10 divided by 91 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2509.9
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
The number 91 fits into 100 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 2509.901
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
91 goes into 90 0 times with a remainder of 90.
The next digit of our result is 0. 
Result so far: 2509.901
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 11:
When dividing 900 by 91, we get 9 with a remainder of 81.
Use 9 as the next digit of our solution. 
Result so far: 2509.90109
The remainder is 81 after subtracting 819 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 12:
91 goes into 810 8 times with a remainder of 82.
The next digit of our result is 8. 
Result so far: 2509.901098
Deduct 728 from 810 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 13:
91 can be fit into 820 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 2509.9010989
Deduct 819 from 820 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 14:
10 divided by 91 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2509.9010989
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 2509.9010989, with a leftover of 1e-08.