234211 ÷ 81 
The aim is to understand the frequency of 81 in 234211.

On to step 1:
The number 81 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 81

Let's proceed to step 2:
23 divided by 81 is 0 with a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 23 after subtracting 0 from 23.
Bring next digit (4) of the dividend behind the 23 and repeat the process: 234 / 81

Moving on to step 3:
81 goes into 234 2 times with a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 162 from 234 leaves us with 72.
Take the next digit (2) from the dividend and append it to 72, then repeat: 722 / 81

Going ahead to step 4:
If we divide 722 by 81, we get 8 and a remainder of 74.
Put 8 as the next digit of the answer. 
Result so far: 28.0
If we subtract 648 from 722, we get 74.
Bring next digit (1) of the dividend behind the 74 and repeat the process: 741 / 81

Moving on to step 5:
If we divide 741 by 81, we get 9 and a remainder of 12.
Put 9 as the next digit of the answer. 
Result so far: 289.0
Subtracting 729 from 741 leaves us with 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 81

On to step 6:
If we divide 121 by 81, we get 1 and a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 2891.0
Deduct 81 from 121 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 7:
81 goes into 400 4 times with a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 2891.4
Subtract 324 from 400 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 8:
The number 81 fits into 760 9 times, leaving a remainder of 31.
The number 9 becomes the next digit in our result. 
Result so far: 2891.49
If we subtract 729 from 760, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 9:
81 can be fit into 310 3 times, resulting in a remainder of 67.
Record the quotient 3 as the next digit in the result. 
Result so far: 2891.493
Subtracting 243 from 310 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 10:
If we divide 670 by 81, we get 8 and a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 2891.4938
If we take 648 away from 670, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 11:
The number 81 fits into 220 2 times, leaving a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 2891.49382
Subtracting 162 from 220 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 12:
The number 81 fits into 580 7 times, leaving a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 2891.493827
Deduct 567 from 580 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 13:
81 goes into 130 1 times with a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 2891.4938271
Subtract 81 from 130 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 14:
81 goes into 490 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 2891.49382716
Deduct 486 from 490 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 2891.49382716 with a remaining 4e-09.