111616 ÷ 91 
The aim is to understand the frequency of 91 in 111616.

Going ahead to step 1:
1 divided by 91 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 91

Advancing to step 2:
If we divide 11 by 91, we get 0 and a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 11, we end up with 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 91

Advancing to step 3:
111 divided by 91 is 1 with a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 91 from 111 leaves us with 20.
Bring next digit (6) of the dividend behind the 20 and repeat the process: 206 / 91

Let's proceed to step 4:
206 divided by 91 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 182 from 206 leaves us with 24.
Grab the next digit (1) from the dividend, add it to 24, then carry on: 241 / 91

Step 5:
91 can be fit into 241 2 times, resulting in a remainder of 59.
The number 2 becomes the next digit in our result. 
Result so far: 122.0
The remainder is 59 after subtracting 182 from 241.
Fetch the next digit (6) from the dividend, attach it to 59 and continue: 596 / 91

Going ahead to step 6:
If we divide 596 by 91, we get 6 and a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 1226.0
Subtract 546 from 596 to get 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 7:
The number 91 fits into 500 5 times, leaving a remainder of 45.
The next digit of our result is 5. 
Result so far: 1226.5
Subtract 455 from 500 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 8:
When dividing 450 by 91, we get 4 with a remainder of 86.
Use 4 as the next digit of our solution. 
Result so far: 1226.54
Subtract 364 from 450 to 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.

Advancing to step 9:
When dividing 860 by 91, we get 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 1226.549
Deduct 819 from 860 and we're left 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.

Advancing to step 10:
91 can be fit into 410 4 times, resulting in a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 1226.5494
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 11:
If we divide 460 by 91, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 1226.54945
If we take 455 away from 460, we end up 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.

Let's proceed to step 12:
When dividing 50 by 91, we get 0 with a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 1226.54945
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 13:
The number 91 fits into 500 5 times, leaving a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 1226.5494505
If we take 455 away from 500, we end up 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.

On to step 14:
91 can be fit into 450 4 times, resulting in a remainder of 86.
Use 4 as the next digit of our solution. 
Result so far: 1226.54945054
Subtract 364 from 450 to 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.

The final outcome is 1226.54945054, with a leftover of 8.6e-08.