We're dividing 69482665 by 81 
The aim is to understand the frequency of 81 in 69482665.

Step 1:
81 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 81

Moving on to step 2:
If we divide 69 by 81, we get 0 and a remainder of 69.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 69 to get 69.
Fetch the next digit (4) from the dividend, attach it to 69 and continue: 694 / 81

Step 3:
If we divide 694 by 81, we get 8 and a remainder of 46.
The next digit of our result is 8. 
Result so far: 8.0
If we take 648 away from 694, we end up with 46.
Include the next digit (8) from the dividend after 46, then repeat: 468 / 81

On to step 4:
468 divided by 81 is 5 with a remainder of 63.
The number 5 becomes the next digit in our result. 
Result so far: 85.0
If we subtract 405 from 468, we get 63.
Fetch the next digit (2) from the dividend, attach it to 63 and continue: 632 / 81

Moving on to step 5:
The number 81 fits into 632 7 times, leaving a remainder of 65.
Use 7 as the next digit of our solution. 
Result so far: 857.0
Subtract 567 from 632 to get 65.
Grab the next digit (6) from the dividend, add it to 65, then carry on: 656 / 81

On to step 6:
The number 81 fits into 656 8 times, leaving a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 8578.0
The remainder is 8 after subtracting 648 from 656.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 81

Moving on to step 7:
81 can be fit into 86 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 85781.0
Subtracting 81 from 86 leaves us with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 81

Step 8:
When dividing 55 by 81, we get 0 with a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 857810.0
Subtract 0 from 55 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 9:
When dividing 550 by 81, we get 6 with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 857810.6
If we take 486 away from 550, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 10:
When dividing 640 by 81, we get 7 with a remainder of 73.
Write down 7 as next digit of the result. 
Result so far: 857810.67
Subtracting 567 from 640 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 11:
When dividing 730 by 81, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 857810.679
Deduct 729 from 730 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 12:
If we divide 10 by 81, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 857810.679
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
The number 81 fits into 100 1 times, leaving a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 857810.67901
Deduct 81 from 100 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 14:
190 divided by 81 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 857810.679012
The remainder is 28 after subtracting 162 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 15:
The number 81 fits into 280 3 times, leaving a remainder of 37.
The next digit of our result is 3. 
Result so far: 857810.6790123
If we take 243 away from 280, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 16:
When dividing 370 by 81, we get 4 with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 857810.67901234
Subtract 324 from 370 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final outcome is 857810.67901234, with a leftover of 4.6e-08.