796125 ÷ 81 
The aim is to understand the frequency of 81 in 796125.

Step 1:
81 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 81

Moving on to step 2:
81 goes into 79 0 times with a remainder of 79.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 79 after subtracting 0 from 79.
Grab the next digit (6) from the dividend, add it to 79, then carry on: 796 / 81

Moving on to step 3:
The number 81 fits into 796 9 times, leaving a remainder of 67.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 729 away from 796, we end up with 67.
Take the next digit (1) from the dividend and append it to 67, then repeat: 671 / 81

Advancing to step 4:
When dividing 671 by 81, we get 8 with a remainder of 23.
Use 8 as the next digit of our solution. 
Result so far: 98.0
The remainder is 23 after subtracting 648 from 671.
Fetch the next digit (2) from the dividend, attach it to 23 and continue: 232 / 81

Moving on to step 5:
If we divide 232 by 81, we get 2 and a remainder of 70.
Use 2 as the next digit of our solution. 
Result so far: 982.0
Subtracting 162 from 232 leaves us with 70.
Grab the next digit (5) from the dividend, add it to 70, then carry on: 705 / 81

Going ahead to step 6:
If we divide 705 by 81, we get 8 and a remainder of 57.
The number 8 becomes the next digit in our result. 
Result so far: 9828.0
Subtract 648 from 705 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 7:
The number 81 fits into 570 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 9828.7
If we subtract 567 from 570, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 8:
81 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 9828.7
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
If we divide 300 by 81, we get 3 and a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 9828.703
Subtracting 243 from 300 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 10:
When dividing 570 by 81, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 9828.7037
Subtracting 567 from 570 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
When dividing 30 by 81, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 9828.7037
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
If we divide 300 by 81, we get 3 and a remainder of 57.
The next digit of our result is 3. 
Result so far: 9828.703703
Subtract 243 from 300 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 13:
81 can be fit into 570 7 times, resulting in a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 9828.7037037
Subtract 567 from 570 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 14:
81 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 9828.7037037
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 9828.7037037 with a remaining 3e-08.