248103 ÷ 81 
The aim is to understand the frequency of 81 in 248103.

Step 1:
2 divided by 81 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 81

Advancing to step 2:
If we divide 24 by 81, we get 0 and a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 24 leaves us with 24.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 81

Let's proceed to step 3:
248 divided by 81 is 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 243 from 248 and we're left with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 81

On to step 4:
The number 81 fits into 51 0 times, leaving a remainder of 51.
The next digit of our result is 0. 
Result so far: 30.0
If we subtract 0 from 51, we get 51.
Bring next digit (0) of the dividend behind the 51 and repeat the process: 510 / 81

Going ahead to step 5:
When dividing 510 by 81, we get 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 306.0
Deduct 486 from 510 and we're left with 24.
Grab the next digit (3) from the dividend, add it to 24, then carry on: 243 / 81

Let's proceed to step 6:
81 goes into 243 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3063.0
The remainder is 0 after subtracting 243 from 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
The number 81 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3063.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
When dividing 0 by 81, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3063.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 3063.0 with a remaining 0.0.