Let's divide 441687 by 81
The aim is to understand the frequency of 81 in 441687.

Moving on to step 1:
If we divide 4 by 81, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 81

Advancing to step 2:
When dividing 44 by 81, we get 0 with a remainder of 44.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 44, we get 44.
Take the next digit (1) from the dividend and append it to 44, then repeat: 441 / 81

Step 3:
81 goes into 441 5 times with a remainder of 36.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 405 from 441 to get 36.
Bring next digit (6) of the dividend behind the 36 and repeat the process: 366 / 81

Moving on to step 4:
81 goes into 366 4 times with a remainder of 42.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
If we take 324 away from 366, we end up with 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 81

Let's proceed to step 5:
428 divided by 81 is 5 with a remainder of 23.
Use 5 as the next digit of our solution. 
Result so far: 545.0
If we take 405 away from 428, we end up with 23.
Include the next digit (7) from the dividend after 23, then repeat: 237 / 81

Let's proceed to step 6:
When dividing 237 by 81, we get 2 with a remainder of 75.
Use 2 as the next digit of our solution. 
Result so far: 5452.0
If we take 162 away from 237, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 7:
The number 81 fits into 750 9 times, leaving a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 5452.9
If we take 729 away from 750, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
81 goes into 210 2 times with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 5452.92
Subtract 162 from 210 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
The number 81 fits into 480 5 times, leaving a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 5452.925
Subtracting 405 from 480 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 10:
When dividing 750 by 81, we get 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 5452.9259
Subtract 729 from 750 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 11:
81 can be fit into 210 2 times, resulting in a remainder of 48.
The next digit of our result is 2. 
Result so far: 5452.92592
Deduct 162 from 210 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 12:
The number 81 fits into 480 5 times, leaving a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 5452.925925
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 13:
81 goes into 750 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 5452.9259259
Subtract 729 from 750 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 14:
81 goes into 210 2 times with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 5452.92592592
If we take 162 away from 210, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 5452.92592592, with a leftover of 4.8e-08.