We look at the division of 115619 by 71 
The aim is to understand the frequency of 71 in 115619.

Let's proceed to step 1:
1 divided by 71 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 71

On to step 2:
When dividing 11 by 71, we get 0 with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 11, we get 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 71

Let's proceed to step 3:
71 goes into 115 1 times with a remainder of 44.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 44 after subtracting 71 from 115.
Append the next digit (6) from the dividend to 44 and continue with: 446 / 71

Step 4:
The number 71 fits into 446 6 times, leaving a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Deduct 426 from 446 and we're left with 20.
Append the next digit (1) from the dividend to 20 and continue with: 201 / 71

Step 5:
When dividing 201 by 71, we get 2 with a remainder of 59.
The number 2 becomes the next digit in our result. 
Result so far: 162.0
Deduct 142 from 201 and we're left with 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 71

On to step 6:
The number 71 fits into 599 8 times, leaving a remainder of 31.
Put 8 as the next digit of the answer. 
Result so far: 1628.0
The remainder is 31 after subtracting 568 from 599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 7:
71 can be fit into 310 4 times, resulting in a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 1628.4
If we subtract 284 from 310, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 8:
If we divide 260 by 71, we get 3 and a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 1628.43
If we take 213 away from 260, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 9:
The number 71 fits into 470 6 times, leaving a remainder of 44.
The next digit of our result is 6. 
Result so far: 1628.436
Subtracting 426 from 470 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 10:
71 goes into 440 6 times with a remainder of 14.
The next digit of our result is 6. 
Result so far: 1628.4366
If we take 426 away from 440, we end up 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.

The final result is 1628.4366 with a remainder of 0.00014.