We look at the division of 589183 by 81 
The aim is to understand the frequency of 81 in 589183.

Let's proceed to step 1:
The number 81 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 81

Let's proceed to step 2:
If we divide 58 by 81, we get 0 and a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 58, we get 58.
Grab the next digit (9) from the dividend, add it to 58, then carry on: 589 / 81

Going ahead to step 3:
589 divided by 81 is 7 with a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 567 away from 589, we end up with 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 81

On to step 4:
When dividing 221 by 81, we get 2 with a remainder of 59.
The next digit of our result is 2. 
Result so far: 72.0
If we take 162 away from 221, we end up with 59.
Append the next digit (8) from the dividend to 59 and continue with: 598 / 81

Advancing to step 5:
598 divided by 81 is 7 with a remainder of 31.
Use 7 as the next digit of our solution. 
Result so far: 727.0
The remainder is 31 after subtracting 567 from 598.
Grab the next digit (3) from the dividend, add it to 31, then carry on: 313 / 81

On to step 6:
If we divide 313 by 81, we get 3 and a remainder of 70.
Use 3 as the next digit of our solution. 
Result so far: 7273.0
Subtracting 243 from 313 leaves us 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 7:
When dividing 700 by 81, we get 8 with a remainder of 52.
The next digit of our result is 8. 
Result so far: 7273.8
Deduct 648 from 700 and we're left 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.

Moving on to step 8:
81 can be fit into 520 6 times, resulting in a remainder of 34.
The number 6 becomes the next digit in our result. 
Result so far: 7273.86
Subtract 486 from 520 to 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.

On to step 9:
340 divided by 81 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 7273.864
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.

Going ahead to step 10:
160 divided by 81 is 1 with a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 7273.8641
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.

Let's proceed to step 11:
If we divide 790 by 81, we get 9 and a remainder of 61.
The next digit of our result is 9. 
Result so far: 7273.86419
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.

Going ahead to step 12:
81 can be fit into 610 7 times, resulting in a remainder of 43.
The next digit of our result is 7. 
Result so far: 7273.864197
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.

Step 13:
When dividing 430 by 81, we get 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 7273.8641975
Subtract 405 from 430 to 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.

On to step 14:
If we divide 250 by 81, we get 3 and a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 7273.86419753
If we subtract 243 from 250, 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.

Our division results in 7273.86419753 with a remaining 7e-09.