We're dividing 12349187 by 558 
The aim is to understand the frequency of 558 in 12349187.

Moving on to step 1:
If we divide 1 by 558, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 558

On to step 2:
If we divide 12 by 558, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 558

Advancing to step 3:
When dividing 123 by 558, we get 0 with a remainder of 123.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 123 leaves us with 123.
Fetch the next digit (4) from the dividend, attach it to 123 and continue: 1234 / 558

Let's proceed to step 4:
The number 558 fits into 1234 2 times, leaving a remainder of 118.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1116 from 1234 and we're left with 118.
Take the next digit (9) from the dividend and append it to 118, then repeat: 1189 / 558

Moving on to step 5:
If we divide 1189 by 558, we get 2 and a remainder of 73.
Put 2 as the next digit of the answer. 
Result so far: 22.0
If we subtract 1116 from 1189, we get 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 558

Let's proceed to step 6:
When dividing 731 by 558, we get 1 with a remainder of 173.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
The remainder is 173 after subtracting 558 from 731.
Include the next digit (8) from the dividend after 173, then repeat: 1738 / 558

Step 7:
When dividing 1738 by 558, we get 3 with a remainder of 64.
The number 3 becomes the next digit in our result. 
Result so far: 2213.0
If we subtract 1674 from 1738, we get 64.
Fetch the next digit (7) from the dividend, attach it to 64 and continue: 647 / 558

Going ahead to step 8:
558 can be fit into 647 1 times, resulting in a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 22131.0
If we subtract 558 from 647, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 9:
558 goes into 890 1 times with a remainder of 332.
The next digit of our result is 1. 
Result so far: 22131.1
If we subtract 558 from 890, we get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Moving on to step 10:
3320 divided by 558 is 5 with a remainder of 530.
The next digit of our result is 5. 
Result so far: 22131.15
If we subtract 2790 from 3320, we get 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Moving on to step 11:
When dividing 5300 by 558, we get 9 with a remainder of 278.
Write down 9 as next digit of the result. 
Result so far: 22131.159
If we take 5022 away from 5300, we end up with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

On to step 12:
558 can be fit into 2780 4 times, resulting in a remainder of 548.
Record the quotient 4 as the next digit in the result. 
Result so far: 22131.1594
Deduct 2232 from 2780 and we're left with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

On to step 13:
5480 divided by 558 is 9 with a remainder of 458.
The number 9 becomes the next digit in our result. 
Result so far: 22131.15949
Subtract 5022 from 5480 to get 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Step 14:
The number 558 fits into 4580 8 times, leaving a remainder of 116.
The number 8 becomes the next digit in our result. 
Result so far: 22131.159498
If we subtract 4464 from 4580, we get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 15:
When dividing 1160 by 558, we get 2 with a remainder of 44.
The number 2 becomes the next digit in our result. 
Result so far: 22131.1594982
If we subtract 1116 from 1160, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 16:
558 can be fit into 440 0 times, resulting in a remainder of 440.
The next digit of our result is 0. 
Result so far: 22131.1594982
The remainder is 440 after subtracting 0 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

The final result is 22131.1594982 with a remainder of 4.4e-07.