We divide 941230 by 81
The aim is to understand the frequency of 81 in 941230.

Step 1:
When dividing 9 by 81, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (4) from the dividend after 9, then repeat: 94 / 81

Moving on to step 2:
94 divided by 81 is 1 with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 81 from 94 and we're left with 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 81

Moving on to step 3:
When dividing 131 by 81, we get 1 with a remainder of 50.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Deduct 81 from 131 and we're left with 50.
Bring next digit (2) of the dividend behind the 50 and repeat the process: 502 / 81

Let's proceed to step 4:
If we divide 502 by 81, we get 6 and a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 116.0
If we take 486 away from 502, we end up with 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 81

Let's proceed to step 5:
163 divided by 81 is 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 1162.0
Subtracting 162 from 163 leaves us with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 81

Let's proceed to step 6:
81 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 11620.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
81 goes into 100 1 times with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 11620.1
Subtract 81 from 100 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 8:
190 divided by 81 is 2 with a remainder of 28.
The next digit of our result is 2. 
Result so far: 11620.12
If we subtract 162 from 190, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 9:
280 divided by 81 is 3 with a remainder of 37.
The next digit of our result is 3. 
Result so far: 11620.123
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.

On to step 10:
The number 81 fits into 370 4 times, leaving a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 11620.1234
The remainder is 46 after subtracting 324 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 11:
The number 81 fits into 460 5 times, leaving a remainder of 55.
The next digit of our result is 5. 
Result so far: 11620.12345
Subtracting 405 from 460 leaves us 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.

Going ahead to step 12:
The number 81 fits into 550 6 times, leaving a remainder of 64.
The next digit of our result is 6. 
Result so far: 11620.123456
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.

Moving on to step 13:
640 divided by 81 is 7 with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 11620.1234567
If we subtract 567 from 640, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 14:
When dividing 730 by 81, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 11620.12345679
Subtracting 729 from 730 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 11620.12345679, with a leftover of 1e-09.