We're dividing 815666 by 36 
The aim is to understand the frequency of 36 in 815666.

Step 1:
8 divided by 36 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 36

Step 2:
81 divided by 36 is 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 9 after subtracting 72 from 81.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 36

On to step 3:
When dividing 95 by 36, we get 2 with a remainder of 23.
The next digit of our result is 2. 
Result so far: 22.0
If we subtract 72 from 95, we get 23.
Grab the next digit (6) from the dividend, add it to 23, then carry on: 236 / 36

Let's proceed to step 4:
236 divided by 36 is 6 with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 226.0
The remainder is 20 after subtracting 216 from 236.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 36

Let's proceed to step 5:
The number 36 fits into 206 5 times, leaving a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 2265.0
Subtract 180 from 206 to get 26.
Bring next digit (6) of the dividend behind the 26 and repeat the process: 266 / 36

Moving on to step 6:
If we divide 266 by 36, we get 7 and a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 22657.0
If we subtract 252 from 266, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
36 can be fit into 140 3 times, resulting in a remainder of 32.
Record the quotient 3 as the next digit in the result. 
Result so far: 22657.3
The remainder is 32 after subtracting 108 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 8:
36 goes into 320 8 times with a remainder of 32.
The next digit of our result is 8. 
Result so far: 22657.38
If we take 288 away from 320, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 9:
36 goes into 320 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 22657.388
If we take 288 away from 320, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 22657.388 with a remaining 0.0032.