867787 ÷ 81 
The aim is to understand the frequency of 81 in 867787.

Moving on to step 1:
The number 81 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 81

Step 2:
81 can be fit into 86 1 times, resulting in a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 81 from 86 to get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 81

On to step 3:
The number 81 fits into 57 0 times, leaving a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 57, we get 57.
Fetch the next digit (7) from the dividend, attach it to 57 and continue: 577 / 81

On to step 4:
81 goes into 577 7 times with a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 107.0
Subtract 567 from 577 to get 10.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 81

Let's proceed to step 5:
The number 81 fits into 108 1 times, leaving a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 1071.0
If we take 81 away from 108, we end up with 27.
Take the next digit (7) from the dividend and append it to 27, then repeat: 277 / 81

Advancing to step 6:
277 divided by 81 is 3 with a remainder of 34.
The next digit of our result is 3. 
Result so far: 10713.0
If we subtract 243 from 277, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 7:
The number 81 fits into 340 4 times, leaving a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 10713.4
Subtract 324 from 340 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
If we divide 160 by 81, we get 1 and a remainder of 79.
The number 1 becomes the next digit in our result. 
Result so far: 10713.41
The remainder is 79 after subtracting 81 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 9:
If we divide 790 by 81, we get 9 and a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 10713.419
Subtracting 729 from 790 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 10:
When dividing 610 by 81, we get 7 with a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 10713.4197
The remainder is 43 after subtracting 567 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 11:
81 can be fit into 430 5 times, resulting in a remainder of 25.
The next digit of our result is 5. 
Result so far: 10713.41975
If we subtract 405 from 430, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 12:
The number 81 fits into 250 3 times, leaving a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 10713.419753
Deduct 243 from 250 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 13:
81 goes into 70 0 times with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 10713.419753
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 14:
700 divided by 81 is 8 with a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 10713.41975308
If we take 648 away from 700, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Our division results in 10713.41975308 with a remaining 5.2e-08.