We look at the division of 418696 by 81 
The aim is to understand the frequency of 81 in 418696.

Moving on to step 1:
When dividing 4 by 81, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 81

Step 2:
41 divided by 81 is 0 with a remainder of 41.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 41 and we're left with 41.
Include the next digit (8) from the dividend after 41, then repeat: 418 / 81

On to step 3:
81 can be fit into 418 5 times, resulting in a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 405 from 418, we get 13.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 81

Advancing to step 4:
81 can be fit into 136 1 times, resulting in a remainder of 55.
Write down 1 as next digit of the result. 
Result so far: 51.0
If we subtract 81 from 136, we get 55.
Append the next digit (9) from the dividend to 55 and continue with: 559 / 81

Let's proceed to step 5:
559 divided by 81 is 6 with a remainder of 73.
Record the quotient 6 as the next digit in the result. 
Result so far: 516.0
Subtract 486 from 559 to get 73.
Include the next digit (6) from the dividend after 73, then repeat: 736 / 81

On to step 6:
When dividing 736 by 81, we get 9 with a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 5169.0
If we subtract 729 from 736, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
When dividing 70 by 81, we get 0 with a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 5169.0
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 8:
700 divided by 81 is 8 with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 5169.08
Subtract 648 from 700 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
When dividing 520 by 81, we get 6 with a remainder of 34.
Put 6 as the next digit of the answer. 
Result so far: 5169.086
Deduct 486 from 520 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
If we divide 340 by 81, we get 4 and a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 5169.0864
Deduct 324 from 340 and we're left with 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 11:
81 goes into 160 1 times with a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 5169.08641
Deduct 81 from 160 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 12:
When dividing 790 by 81, we get 9 with a remainder of 61.
The number 9 becomes the next digit in our result. 
Result so far: 5169.086419
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.

Moving on to step 13:
If we divide 610 by 81, we get 7 and a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 5169.0864197
If we take 567 away from 610, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 14:
When dividing 430 by 81, we get 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 5169.08641975
Deduct 405 from 430 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 5169.08641975 with a remainder of 2.5e-08.