We look at the division of 17158115 by 558 
The aim is to understand the frequency of 558 in 17158115.

Let's proceed to step 1:
When dividing 1 by 558, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 558

On to step 2:
558 can be fit into 17 0 times, resulting in a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 558

Moving on to step 3:
558 goes into 171 0 times with a remainder of 171.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 171, we get 171.
Append the next digit (5) from the dividend to 171 and continue with: 1715 / 558

Going ahead to step 4:
When dividing 1715 by 558, we get 3 with a remainder of 41.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 41 after subtracting 1674 from 1715.
Include the next digit (8) from the dividend after 41, then repeat: 418 / 558

Advancing to step 5:
558 can be fit into 418 0 times, resulting in a remainder of 418.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
Subtracting 0 from 418 leaves us with 418.
Fetch the next digit (1) from the dividend, attach it to 418 and continue: 4181 / 558

Going ahead to step 6:
If we divide 4181 by 558, we get 7 and a remainder of 275.
The number 7 becomes the next digit in our result. 
Result so far: 307.0
Subtracting 3906 from 4181 leaves us with 275.
Take the next digit (1) from the dividend and append it to 275, then repeat: 2751 / 558

Step 7:
558 can be fit into 2751 4 times, resulting in a remainder of 519.
Record the quotient 4 as the next digit in the result. 
Result so far: 3074.0
The remainder is 519 after subtracting 2232 from 2751.
Take the next digit (5) from the dividend and append it to 519, then repeat: 5195 / 558

Let's proceed to step 8:
5195 divided by 558 is 9 with a remainder of 173.
Put 9 as the next digit of the answer. 
Result so far: 30749.0
Subtract 5022 from 5195 to get 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Advancing to step 9:
The number 558 fits into 1730 3 times, leaving a remainder of 56.
Put 3 as the next digit of the answer. 
Result so far: 30749.3
Deduct 1674 from 1730 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
The number 558 fits into 560 1 times, leaving a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 30749.31
Deduct 558 from 560 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
If we divide 20 by 558, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 30749.31
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
200 divided by 558 is 0 with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 30749.31
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 30749.31 with a remaining 0.002.