We're dividing 453562 by 81 
The aim is to understand the frequency of 81 in 453562.

Let's proceed to step 1:
81 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 81

Advancing to step 2:
81 goes into 45 0 times with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Grab the next digit (3) from the dividend, add it to 45, then carry on: 453 / 81

Going ahead to step 3:
453 divided by 81 is 5 with a remainder of 48.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 405 from 453 and we're left with 48.
Take the next digit (5) from the dividend and append it to 48, then repeat: 485 / 81

Going ahead to step 4:
485 divided by 81 is 5 with a remainder of 80.
The number 5 becomes the next digit in our result. 
Result so far: 55.0
If we subtract 405 from 485, we get 80.
Grab the next digit (6) from the dividend, add it to 80, then carry on: 806 / 81

Advancing to step 5:
81 can be fit into 806 9 times, resulting in a remainder of 77.
Use 9 as the next digit of our solution. 
Result so far: 559.0
If we subtract 729 from 806, we get 77.
Append the next digit (2) from the dividend to 77 and continue with: 772 / 81

Step 6:
If we divide 772 by 81, we get 9 and a remainder of 43.
The next digit of our result is 9. 
Result so far: 5599.0
If we subtract 729 from 772, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 7:
If we divide 430 by 81, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 5599.5
If we take 405 away from 430, we end up 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.

Advancing to step 8:
81 goes into 250 3 times with a remainder of 7.
The next digit of our result is 3. 
Result so far: 5599.53
The remainder is 7 after subtracting 243 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
If we divide 70 by 81, we get 0 and a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 5599.53
If we subtract 0 from 70, we get 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 10:
81 can be fit into 700 8 times, resulting in a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 5599.5308
If we subtract 648 from 700, we 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.

Moving on to step 11:
When dividing 520 by 81, we get 6 with a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 5599.53086
If we take 486 away from 520, we end up 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.

Going ahead to step 12:
The number 81 fits into 340 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 5599.530864
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.

Step 13:
160 divided by 81 is 1 with a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 5599.5308641
Subtract 81 from 160 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 14:
When dividing 790 by 81, we get 9 with a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 5599.53086419
The remainder is 61 after subtracting 729 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

After the division, we end up with 5599.53086419 and a remainder of 6.1e-08.