We're dividing 72971423 by 558 
The aim is to understand the frequency of 558 in 72971423.

Moving on to step 1:
The number 558 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 558

Let's proceed to step 2:
When dividing 72 by 558, we get 0 with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Append the next digit (9) from the dividend to 72 and continue with: 729 / 558

Moving on to step 3:
729 divided by 558 is 1 with a remainder of 171.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 558 away from 729, we end up with 171.
Append the next digit (7) from the dividend to 171 and continue with: 1717 / 558

Going ahead to step 4:
The number 558 fits into 1717 3 times, leaving a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 1674 from 1717 and we're left with 43.
Fetch the next digit (1) from the dividend, attach it to 43 and continue: 431 / 558

Let's proceed to step 5:
558 can be fit into 431 0 times, resulting in a remainder of 431.
Record the quotient 0 as the next digit in the result. 
Result so far: 130.0
Subtract 0 from 431 to get 431.
Grab the next digit (4) from the dividend, add it to 431, then carry on: 4314 / 558

Advancing to step 6:
The number 558 fits into 4314 7 times, leaving a remainder of 408.
The next digit of our result is 7. 
Result so far: 1307.0
Subtracting 3906 from 4314 leaves us with 408.
Include the next digit (2) from the dividend after 408, then repeat: 4082 / 558

On to step 7:
4082 divided by 558 is 7 with a remainder of 176.
Put 7 as the next digit of the answer. 
Result so far: 13077.0
If we subtract 3906 from 4082, we get 176.
Take the next digit (3) from the dividend and append it to 176, then repeat: 1763 / 558

On to step 8:
If we divide 1763 by 558, we get 3 and a remainder of 89.
Write down 3 as next digit of the result. 
Result so far: 130773.0
Subtract 1674 from 1763 to 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 can be fit into 890 1 times, resulting in a remainder of 332.
The number 1 becomes the next digit in our result. 
Result so far: 130773.1
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:
558 can be fit into 3320 5 times, resulting in a remainder of 530.
The number 5 becomes the next digit in our result. 
Result so far: 130773.15
The remainder is 530 after subtracting 2790 from 3320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Advancing to step 11:
If we divide 5300 by 558, we get 9 and a remainder of 278.
The number 9 becomes the next digit in our result. 
Result so far: 130773.159
The remainder is 278 after subtracting 5022 from 5300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Going ahead to step 12:
If we divide 2780 by 558, we get 4 and a remainder of 548.
The number 4 becomes the next digit in our result. 
Result so far: 130773.1594
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.

Going ahead to step 13:
When dividing 5480 by 558, we get 9 with a remainder of 458.
Write down 9 as next digit of the result. 
Result so far: 130773.15949
Subtracting 5022 from 5480 leaves us with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Moving on to step 14:
The number 558 fits into 4580 8 times, leaving a remainder of 116.
Write down 8 as next digit of the result. 
Result so far: 130773.159498
Subtract 4464 from 4580 to 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.

Let's proceed to step 15:
558 can be fit into 1160 2 times, resulting in a remainder of 44.
The next digit of our result is 2. 
Result so far: 130773.1594982
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.

Moving on to step 16:
440 divided by 558 is 0 with a remainder of 440.
The number 0 becomes the next digit in our result. 
Result so far: 130773.1594982
If we subtract 0 from 440, we get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

In conclusion, the division gives 130773.1594982 with a balance of 4.4e-07.