11991 ÷ 36 
The aim is to understand the frequency of 36 in 11991.

Moving on to step 1:
1 divided by 36 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 36

Moving on to step 2:
11 divided by 36 is 0 with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 11 leaves us with 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 36

Let's proceed to step 3:
36 goes into 119 3 times with a remainder of 11.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 108 from 119 to get 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 36

Moving on to step 4:
36 goes into 119 3 times with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
Deduct 108 from 119 and we're left with 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 36

On to step 5:
36 can be fit into 111 3 times, resulting in a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 333.0
If we take 108 away from 111, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 6:
The number 36 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 333.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
The number 36 fits into 300 8 times, leaving a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 333.08
If we take 288 away from 300, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
The number 36 fits into 120 3 times, leaving a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 333.083
Subtracting 108 from 120 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
36 can be fit into 120 3 times, resulting in a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 333.0833
Subtract 108 from 120 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 333.0833 and a remainder of 0.00012.