792505 ÷ 81 
The aim is to understand the frequency of 81 in 792505.

Step 1:
81 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 81

Advancing to step 2:
81 goes into 79 0 times with a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Include the next digit (2) from the dividend after 79, then repeat: 792 / 81

Moving on to step 3:
81 can be fit into 792 9 times, resulting in a remainder of 63.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 63 after subtracting 729 from 792.
Take the next digit (5) from the dividend and append it to 63, then repeat: 635 / 81

Advancing to step 4:
When dividing 635 by 81, we get 7 with a remainder of 68.
Put 7 as the next digit of the answer. 
Result so far: 97.0
Deduct 567 from 635 and we're left with 68.
Fetch the next digit (0) from the dividend, attach it to 68 and continue: 680 / 81

Moving on to step 5:
If we divide 680 by 81, we get 8 and a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 978.0
Deduct 648 from 680 and we're left with 32.
Grab the next digit (5) from the dividend, add it to 32, then carry on: 325 / 81

Moving on to step 6:
When dividing 325 by 81, we get 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 9784.0
The remainder is 1 after subtracting 324 from 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
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: 9784.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
81 can be fit into 100 1 times, resulting in a remainder of 19.
The next digit of our result is 1. 
Result so far: 9784.01
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.

Step 9:
If we divide 190 by 81, we get 2 and a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 9784.012
Deduct 162 from 190 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 10:
If we divide 280 by 81, we get 3 and a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 9784.0123
The remainder is 37 after subtracting 243 from 280.
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 11:
81 can be fit into 370 4 times, resulting in a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 9784.01234
If we subtract 324 from 370, we 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.

Going ahead to step 12:
81 can be fit into 460 5 times, resulting in a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 9784.012345
Subtracting 405 from 460 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 13:
If we divide 550 by 81, we get 6 and a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 9784.0123456
If we subtract 486 from 550, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 14:
When dividing 640 by 81, we get 7 with a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 9784.01234567
If we take 567 away from 640, we end up 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.

After the division, we end up with 9784.01234567 and a remainder of 7.3e-08.