We're dividing 91721595 by 36 
The aim is to understand the frequency of 36 in 91721595.

Advancing to step 1:
When dividing 9 by 36, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 36

Going ahead to step 2:
The number 36 fits into 91 2 times, leaving a remainder of 19.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 72 from 91, we get 19.
Append the next digit (7) from the dividend to 19 and continue with: 197 / 36

Moving on to step 3:
If we divide 197 by 36, we get 5 and a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
If we subtract 180 from 197, we get 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 36

Going ahead to step 4:
36 can be fit into 172 4 times, resulting in a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 254.0
Deduct 144 from 172 and we're left with 28.
Grab the next digit (1) from the dividend, add it to 28, then carry on: 281 / 36

Step 5:
36 can be fit into 281 7 times, resulting in a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 2547.0
If we subtract 252 from 281, we get 29.
Include the next digit (5) from the dividend after 29, then repeat: 295 / 36

Moving on to step 6:
36 goes into 295 8 times with a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 25478.0
Deduct 288 from 295 and we're left with 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 36

Moving on to step 7:
79 divided by 36 is 2 with a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 254782.0
If we subtract 72 from 79, we get 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 36

On to step 8:
36 goes into 75 2 times with a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 2547822.0
The remainder is 3 after subtracting 72 from 75.
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 9:
When dividing 30 by 36, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 2547822.0
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.

Let's proceed to step 10:
If we divide 300 by 36, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 2547822.08
Subtract 288 from 300 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.

Step 11:
The number 36 fits into 120 3 times, leaving a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 2547822.083
The remainder is 12 after subtracting 108 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 12:
120 divided by 36 is 3 with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 2547822.0833
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.

The final outcome is 2547822.0833, with a leftover of 0.00012.