We're dividing 661431 by 41 
The aim is to understand the frequency of 41 in 661431.

Step 1:
41 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 41

Step 2:
41 can be fit into 66 1 times, resulting in a remainder of 25.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 41 from 66 and we're left with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 41

On to step 3:
41 goes into 251 6 times with a remainder of 5.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we take 246 away from 251, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 41

Advancing to step 4:
If we divide 54 by 41, we get 1 and a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 161.0
If we take 41 away from 54, we end up with 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 41

Advancing to step 5:
133 divided by 41 is 3 with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 1613.0
If we subtract 123 from 133, we get 10.
Append the next digit (1) from the dividend to 10 and continue with: 101 / 41

On to step 6:
41 goes into 101 2 times with a remainder of 19.
Record the quotient 2 as the next digit in the result. 
Result so far: 16132.0
If we subtract 82 from 101, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 41, we get 4 with a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 16132.4
The remainder is 26 after subtracting 164 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 8:
41 goes into 260 6 times with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 16132.46
Subtracting 246 from 260 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
If we divide 140 by 41, we get 3 and a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 16132.463
Subtracting 123 from 140 leaves us 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.

Step 10:
The number 41 fits into 170 4 times, leaving a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 16132.4634
Deduct 164 from 170 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 11:
The number 41 fits into 60 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 16132.46341
If we subtract 41 from 60, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 12:
41 can be fit into 190 4 times, resulting in a remainder of 26.
The next digit of our result is 4. 
Result so far: 16132.463414
The remainder is 26 after subtracting 164 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 13:
260 divided by 41 is 6 with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 16132.4634146
Deduct 246 from 260 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 14:
The number 41 fits into 140 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 16132.46341463
If we take 123 away from 140, we end up 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.

The final result is 16132.46341463 with a remainder of 1.7e-08.