We divide 122338 by 81
The aim is to understand the frequency of 81 in 122338.

Advancing to step 1:
If we divide 1 by 81, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 81

Moving on to step 2:
81 can be fit into 12 0 times, resulting in a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Take the next digit (2) from the dividend and append it to 12, then repeat: 122 / 81

On to step 3:
The number 81 fits into 122 1 times, leaving a remainder of 41.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 81 from 122 leaves us with 41.
Bring next digit (3) of the dividend behind the 41 and repeat the process: 413 / 81

Let's proceed to step 4:
The number 81 fits into 413 5 times, leaving a remainder of 8.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 405 from 413, we get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 81

Step 5:
83 divided by 81 is 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 151.0
If we subtract 81 from 83, we get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 81

Step 6:
28 divided by 81 is 0 with a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 1510.0
Subtracting 0 from 28 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 7:
When dividing 280 by 81, we get 3 with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 1510.3
The remainder is 37 after subtracting 243 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 8:
If we divide 370 by 81, we get 4 and a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 1510.34
If we subtract 324 from 370, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 9:
When dividing 460 by 81, we get 5 with a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 1510.345
If we take 405 away from 460, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 10:
If we divide 550 by 81, we get 6 and a remainder of 64.
The next digit of our result is 6. 
Result so far: 1510.3456
If we subtract 486 from 550, we 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.

Going ahead to step 11:
When dividing 640 by 81, we get 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 1510.34567
Deduct 567 from 640 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 12:
When dividing 730 by 81, we get 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 1510.345679
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.

On to step 13:
The number 81 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 1510.345679
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
81 can be fit into 100 1 times, resulting in a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 1510.34567901
The remainder is 19 after subtracting 81 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 1510.34567901, with a leftover of 1.9e-08.