541133 divided by 81 
The aim is to understand the frequency of 81 in 541133.

Moving on to step 1:
5 divided by 81 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 81

Moving on to step 2:
The number 81 fits into 54 0 times, leaving a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Take the next digit (1) from the dividend and append it to 54, then repeat: 541 / 81

On to step 3:
The number 81 fits into 541 6 times, leaving a remainder of 55.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 486 from 541 leaves us with 55.
Bring next digit (1) of the dividend behind the 55 and repeat the process: 551 / 81

Going ahead to step 4:
81 goes into 551 6 times with a remainder of 65.
Write down 6 as next digit of the result. 
Result so far: 66.0
If we take 486 away from 551, we end up with 65.
Take the next digit (3) from the dividend and append it to 65, then repeat: 653 / 81

Let's proceed to step 5:
81 can be fit into 653 8 times, resulting in a remainder of 5.
The next digit of our result is 8. 
Result so far: 668.0
The remainder is 5 after subtracting 648 from 653.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 81

On to step 6:
The number 81 fits into 53 0 times, leaving a remainder of 53.
The next digit of our result is 0. 
Result so far: 6680.0
Subtract 0 from 53 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
If we divide 530 by 81, we get 6 and a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 6680.6
Deduct 486 from 530 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 8:
440 divided by 81 is 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 6680.65
Subtracting 405 from 440 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 9:
The number 81 fits into 350 4 times, leaving a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 6680.654
The remainder is 26 after subtracting 324 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 10:
When dividing 260 by 81, we get 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 6680.6543
Deduct 243 from 260 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
81 goes into 170 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 6680.65432
If we take 162 away from 170, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
If we divide 80 by 81, we get 0 and a remainder of 80.
The next digit of our result is 0. 
Result so far: 6680.65432
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 13:
81 goes into 800 9 times with a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 6680.6543209
The remainder is 71 after subtracting 729 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 14:
When dividing 710 by 81, we get 8 with a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 6680.65432098
If we take 648 away from 710, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

After the division, we end up with 6680.65432098 and a remainder of 6.2e-08.