We look at the division of 184605 by 81 
The aim is to understand the frequency of 81 in 184605.

Going ahead to step 1:
When dividing 1 by 81, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 81

Going ahead to step 2:
If we divide 18 by 81, we get 0 and a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Bring next digit (4) of the dividend behind the 18 and repeat the process: 184 / 81

Let's proceed to step 3:
81 goes into 184 2 times with a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 162 from 184 and we're left with 22.
Grab the next digit (6) from the dividend, add it to 22, then carry on: 226 / 81

On to step 4:
81 goes into 226 2 times with a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we subtract 162 from 226, we get 64.
Grab the next digit (0) from the dividend, add it to 64, then carry on: 640 / 81

Let's proceed to step 5:
The number 81 fits into 640 7 times, leaving a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 227.0
The remainder is 73 after subtracting 567 from 640.
Fetch the next digit (5) from the dividend, attach it to 73 and continue: 735 / 81

Step 6:
81 can be fit into 735 9 times, resulting in a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 2279.0
Deduct 729 from 735 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
81 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 2279.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
The number 81 fits into 600 7 times, leaving a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 2279.07
If we subtract 567 from 600, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 9:
If we divide 330 by 81, we get 4 and a remainder of 6.
The next digit of our result is 4. 
Result so far: 2279.074
The remainder is 6 after subtracting 324 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 10:
81 can be fit into 60 0 times, resulting in a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 2279.074
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
81 can be fit into 600 7 times, resulting in a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 2279.07407
Subtract 567 from 600 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 12:
When dividing 330 by 81, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 2279.074074
Subtracting 324 from 330 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 13:
81 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 2279.074074
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
When dividing 600 by 81, we get 7 with a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 2279.07407407
If we take 567 away from 600, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The quotient of the division is 2279.07407407, and the remainder is 3.3e-08.