48159 divided by 81 
The aim is to understand the frequency of 81 in 48159.

Step 1:
81 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 81

Going ahead to step 2:
81 goes into 48 0 times with a remainder of 48.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 48 leaves us with 48.
Append the next digit (1) from the dividend to 48 and continue with: 481 / 81

Advancing to step 3:
481 divided by 81 is 5 with a remainder of 76.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 76 after subtracting 405 from 481.
Bring next digit (5) of the dividend behind the 76 and repeat the process: 765 / 81

Advancing to step 4:
When dividing 765 by 81, we get 9 with a remainder of 36.
Use 9 as the next digit of our solution. 
Result so far: 59.0
If we take 729 away from 765, we end up with 36.
Include the next digit (9) from the dividend after 36, then repeat: 369 / 81

Moving on to step 5:
When dividing 369 by 81, we get 4 with a remainder of 45.
Put 4 as the next digit of the answer. 
Result so far: 594.0
The remainder is 45 after subtracting 324 from 369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 6:
If we divide 450 by 81, we get 5 and a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 594.5
If we take 405 away from 450, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 7:
81 can be fit into 450 5 times, resulting in a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 594.55
Deduct 405 from 450 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

After the division, we end up with 594.55 and a remainder of 0.045.