We divide 113355 by 81
The aim is to understand the frequency of 81 in 113355.

Step 1:
When dividing 1 by 81, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 81

Step 2:
When dividing 11 by 81, we get 0 with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 11, we get 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 81

Moving on to step 3:
If we divide 113 by 81, we get 1 and a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 32 after subtracting 81 from 113.
Take the next digit (3) from the dividend and append it to 32, then repeat: 323 / 81

Moving on to step 4:
When dividing 323 by 81, we get 3 with a remainder of 80.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 80 after subtracting 243 from 323.
Take the next digit (5) from the dividend and append it to 80, then repeat: 805 / 81

Moving on to step 5:
81 goes into 805 9 times with a remainder of 76.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
If we subtract 729 from 805, we get 76.
Grab the next digit (5) from the dividend, add it to 76, then carry on: 765 / 81

Let's proceed to step 6:
When dividing 765 by 81, we get 9 with a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 1399.0
If we subtract 729 from 765, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
360 divided by 81 is 4 with a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 1399.4
The remainder is 36 after subtracting 324 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 8:
When dividing 360 by 81, we get 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 1399.44
Subtracting 324 from 360 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 1399.44, with a leftover of 0.036.