Let's divide 815921 by 41
The aim is to understand the frequency of 41 in 815921.

Step 1:
41 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 41

Going ahead to step 2:
When dividing 81 by 41, we get 1 with a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 41 from 81 leaves us with 40.
Append the next digit (5) from the dividend to 40 and continue with: 405 / 41

Let's proceed to step 3:
41 can be fit into 405 9 times, resulting in a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
The remainder is 36 after subtracting 369 from 405.
Bring next digit (9) of the dividend behind the 36 and repeat the process: 369 / 41

Step 4:
41 can be fit into 369 9 times, resulting in a remainder of 0.
The next digit of our result is 9. 
Result so far: 199.0
The remainder is 0 after subtracting 369 from 369.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 41

Moving on to step 5:
The number 41 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 1990.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 41

Going ahead to step 6:
41 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 19900.0
Deduct 0 from 21 and we're left 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.

On to step 7:
The number 41 fits into 210 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 19900.5
If we take 205 away from 210, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
If we divide 50 by 41, we get 1 and a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 19900.51
Subtract 41 from 50 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
90 divided by 41 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 19900.512
If we subtract 82 from 90, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
If we divide 80 by 41, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 19900.5121
Deduct 41 from 80 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 11:
390 divided by 41 is 9 with a remainder of 21.
The next digit of our result is 9. 
Result so far: 19900.51219
Subtract 369 from 390 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 12:
The number 41 fits into 210 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 19900.512195
The remainder is 5 after subtracting 205 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
When dividing 50 by 41, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 19900.5121951
If we subtract 41 from 50, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 14:
90 divided by 41 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 19900.51219512
If we subtract 82 from 90, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 19900.51219512 and a remainder of 8e-09.