Let's divide 457441 by 81
The aim is to understand the frequency of 81 in 457441.

Advancing to step 1:
If we divide 4 by 81, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 81

Moving on to step 2:
81 can be fit into 45 0 times, resulting in a remainder of 45.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 45 after subtracting 0 from 45.
Bring next digit (7) of the dividend behind the 45 and repeat the process: 457 / 81

On to step 3:
The number 81 fits into 457 5 times, leaving a remainder of 52.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 405 from 457 and we're left with 52.
Fetch the next digit (4) from the dividend, attach it to 52 and continue: 524 / 81

On to step 4:
If we divide 524 by 81, we get 6 and a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 56.0
If we take 486 away from 524, we end up with 38.
Grab the next digit (4) from the dividend, add it to 38, then carry on: 384 / 81

Let's proceed to step 5:
81 can be fit into 384 4 times, resulting in a remainder of 60.
Use 4 as the next digit of our solution. 
Result so far: 564.0
Subtract 324 from 384 to get 60.
Append the next digit (1) from the dividend to 60 and continue with: 601 / 81

On to step 6:
The number 81 fits into 601 7 times, leaving a remainder of 34.
Use 7 as the next digit of our solution. 
Result so far: 5647.0
The remainder is 34 after subtracting 567 from 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 7:
340 divided by 81 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 5647.4
Subtracting 324 from 340 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
160 divided by 81 is 1 with a remainder of 79.
Use 1 as the next digit of our solution. 
Result so far: 5647.41
If we take 81 away from 160, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 9:
When dividing 790 by 81, we get 9 with a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 5647.419
If we take 729 away from 790, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 10:
81 can be fit into 610 7 times, resulting in a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 5647.4197
Subtracting 567 from 610 leaves us 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 11:
If we divide 430 by 81, we get 5 and a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 5647.41975
Deduct 405 from 430 and we're left with 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 12:
81 goes into 250 3 times with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 5647.419753
Subtract 243 from 250 to 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.

Moving on to step 13:
70 divided by 81 is 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 5647.419753
If we take 0 away from 70, we end up 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.

Moving on to step 14:
81 goes into 700 8 times with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 5647.41975308
The remainder is 52 after subtracting 648 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 5647.41975308 with a remainder of 5.2e-08.