We're dividing 79025 by 81 
The aim is to understand the frequency of 81 in 79025.

Going ahead to step 1:
If we divide 7 by 81, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 81

On to step 2:
The number 81 fits into 79 0 times, leaving a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 79 after subtracting 0 from 79.
Bring next digit (0) of the dividend behind the 79 and repeat the process: 790 / 81

Let's proceed to step 3:
81 goes into 790 9 times with a remainder of 61.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 61 after subtracting 729 from 790.
Append the next digit (2) from the dividend to 61 and continue with: 612 / 81

Going ahead to step 4:
If we divide 612 by 81, we get 7 and a remainder of 45.
Put 7 as the next digit of the answer. 
Result so far: 97.0
Subtract 567 from 612 to get 45.
Append the next digit (5) from the dividend to 45 and continue with: 455 / 81

Moving on to step 5:
81 goes into 455 5 times with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 975.0
If we subtract 405 from 455, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 6:
The number 81 fits into 500 6 times, leaving a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 975.6
Subtracting 486 from 500 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
81 can be fit into 140 1 times, resulting in a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 975.61
If we subtract 81 from 140, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 8:
81 can be fit into 590 7 times, resulting in a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 975.617
Subtracting 567 from 590 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 9:
81 goes into 230 2 times with a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 975.6172
Deduct 162 from 230 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 10:
81 goes into 680 8 times with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 975.61728
Subtract 648 from 680 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 11:
81 goes into 320 3 times with a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 975.617283
If we take 243 away from 320, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 12:
770 divided by 81 is 9 with a remainder of 41.
The next digit of our result is 9. 
Result so far: 975.6172839
If we subtract 729 from 770, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 13:
410 divided by 81 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 975.61728395
Deduct 405 from 410 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 975.61728395 with a remaining 5e-09.