We look at the division of 41719941 by 391 
The aim is to understand the frequency of 391 in 41719941.

Step 1:
391 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 391

On to step 2:
41 divided by 391 is 0 with a remainder of 41.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 41 and we're left with 41.
Include the next digit (7) from the dividend after 41, then repeat: 417 / 391

Going ahead to step 3:
417 divided by 391 is 1 with a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 391 from 417 and we're left with 26.
Fetch the next digit (1) from the dividend, attach it to 26 and continue: 261 / 391

Step 4:
When dividing 261 by 391, we get 0 with a remainder of 261.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 261 leaves us with 261.
Fetch the next digit (9) from the dividend, attach it to 261 and continue: 2619 / 391

Going ahead to step 5:
391 can be fit into 2619 6 times, resulting in a remainder of 273.
The number 6 becomes the next digit in our result. 
Result so far: 106.0
Subtracting 2346 from 2619 leaves us with 273.
Include the next digit (9) from the dividend after 273, then repeat: 2739 / 391

On to step 6:
391 goes into 2739 7 times with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 1067.0
Subtract 2737 from 2739 to get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 391

Let's proceed to step 7:
391 goes into 24 0 times with a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 10670.0
If we subtract 0 from 24, we get 24.
Append the next digit (1) from the dividend to 24 and continue with: 241 / 391

Moving on to step 8:
If we divide 241 by 391, we get 0 and a remainder of 241.
The number 0 becomes the next digit in our result. 
Result so far: 106700.0
Subtracting 0 from 241 leaves us with 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

On to step 9:
When dividing 2410 by 391, we get 6 with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 106700.6
The remainder is 64 after subtracting 2346 from 2410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 10:
If we divide 640 by 391, we get 1 and a remainder of 249.
Put 1 as the next digit of the answer. 
Result so far: 106700.61
Deduct 391 from 640 and we're left with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Moving on to step 11:
The number 391 fits into 2490 6 times, leaving a remainder of 144.
Use 6 as the next digit of our solution. 
Result so far: 106700.616
If we subtract 2346 from 2490, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Advancing to step 12:
If we divide 1440 by 391, we get 3 and a remainder of 267.
Write down 3 as next digit of the result. 
Result so far: 106700.6163
Deduct 1173 from 1440 and we're left with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Let's proceed to step 13:
391 can be fit into 2670 6 times, resulting in a remainder of 324.
Write down 6 as next digit of the result. 
Result so far: 106700.61636
The remainder is 324 after subtracting 2346 from 2670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 14:
3240 divided by 391 is 8 with a remainder of 112.
Write down 8 as next digit of the result. 
Result so far: 106700.616368
If we subtract 3128 from 3240, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 15:
391 can be fit into 1120 2 times, resulting in a remainder of 338.
Put 2 as the next digit of the answer. 
Result so far: 106700.6163682
The remainder is 338 after subtracting 782 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

On to step 16:
3380 divided by 391 is 8 with a remainder of 252.
The number 8 becomes the next digit in our result. 
Result so far: 106700.61636828
The remainder is 252 after subtracting 3128 from 3380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

The final outcome is 106700.61636828, with a leftover of 2.52e-07.