Let's divide 67309 by 81
The aim is to understand the frequency of 81 in 67309.

Going ahead to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 81

Step 2:
67 divided by 81 is 0 with a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 67 leaves us with 67.
Append the next digit (3) from the dividend to 67 and continue with: 673 / 81

Let's proceed to step 3:
When dividing 673 by 81, we get 8 with a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 648 from 673 leaves us with 25.
Append the next digit (0) from the dividend to 25 and continue with: 250 / 81

Moving on to step 4:
81 can be fit into 250 3 times, resulting in a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 83.0
If we take 243 away from 250, we end up with 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 81

Moving on to step 5:
79 divided by 81 is 0 with a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 830.0
If we subtract 0 from 79, we 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.

Going ahead to step 6:
If we divide 790 by 81, we get 9 and a remainder of 61.
The number 9 becomes the next digit in our result. 
Result so far: 830.9
Deduct 729 from 790 and we're left 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.

Let's proceed to step 7:
If we divide 610 by 81, we get 7 and a remainder of 43.
The next digit of our result is 7. 
Result so far: 830.97
Deduct 567 from 610 and we're left 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 8:
When dividing 430 by 81, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 830.975
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.

On to step 9:
81 can be fit into 250 3 times, resulting in a remainder of 7.
The next digit of our result is 3. 
Result so far: 830.9753
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 10:
81 goes into 70 0 times with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 830.9753
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.

On to step 11:
81 goes into 700 8 times with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 830.975308
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.

Step 12:
81 can be fit into 520 6 times, resulting in a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 830.9753086
The remainder is 34 after subtracting 486 from 520.
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 13:
81 can be fit into 340 4 times, resulting in a remainder of 16.
The next digit of our result is 4. 
Result so far: 830.97530864
Subtracting 324 from 340 leaves us 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.

Our division results in 830.97530864 with a remaining 1.6e-08.