We're dividing 718084 by 81 
The aim is to understand the frequency of 81 in 718084.

On to step 1:
When dividing 7 by 81, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 81

On to step 2:
If we divide 71 by 81, we get 0 and a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 71 to get 71.
Grab the next digit (8) from the dividend, add it to 71, then carry on: 718 / 81

Step 3:
When dividing 718 by 81, we get 8 with a remainder of 70.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 648 from 718 leaves us with 70.
Append the next digit (0) from the dividend to 70 and continue with: 700 / 81

Moving on to step 4:
When dividing 700 by 81, we get 8 with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
If we take 648 away from 700, we end up with 52.
Append the next digit (8) from the dividend to 52 and continue with: 528 / 81

Going ahead to step 5:
528 divided by 81 is 6 with a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 886.0
Deduct 486 from 528 and we're left with 42.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 81

Going ahead to step 6:
The number 81 fits into 424 5 times, leaving a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 8865.0
Subtracting 405 from 424 leaves us 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 7:
81 goes into 190 2 times with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 8865.2
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.

Advancing to step 8:
81 goes into 280 3 times with a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 8865.23
If we subtract 243 from 280, we get 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 9:
If we divide 370 by 81, we get 4 and a remainder of 46.
The next digit of our result is 4. 
Result so far: 8865.234
Subtracting 324 from 370 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 10:
460 divided by 81 is 5 with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 8865.2345
Subtract 405 from 460 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.

Advancing to step 11:
550 divided by 81 is 6 with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 8865.23456
Subtract 486 from 550 to 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 12:
81 goes into 640 7 times with a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 8865.234567
Subtract 567 from 640 to get 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 13:
If we divide 730 by 81, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 8865.2345679
The remainder is 1 after subtracting 729 from 730.
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 14:
10 divided by 81 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 8865.2345679
Deduct 0 from 10 and we're left 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.

The final result is 8865.2345679 with a remainder of 1e-08.