81207891 divided by 558 
The aim is to understand the frequency of 558 in 81207891.

Advancing to step 1:
558 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 558

Moving on to step 2:
When dividing 81 by 558, we get 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Include the next digit (2) from the dividend after 81, then repeat: 812 / 558

On to step 3:
If we divide 812 by 558, we get 1 and a remainder of 254.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 558 away from 812, we end up with 254.
Include the next digit (0) from the dividend after 254, then repeat: 2540 / 558

Step 4:
The number 558 fits into 2540 4 times, leaving a remainder of 308.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Deduct 2232 from 2540 and we're left with 308.
Grab the next digit (7) from the dividend, add it to 308, then carry on: 3087 / 558

Advancing to step 5:
The number 558 fits into 3087 5 times, leaving a remainder of 297.
The number 5 becomes the next digit in our result. 
Result so far: 145.0
Subtract 2790 from 3087 to get 297.
Bring next digit (8) of the dividend behind the 297 and repeat the process: 2978 / 558

Advancing to step 6:
The number 558 fits into 2978 5 times, leaving a remainder of 188.
Put 5 as the next digit of the answer. 
Result so far: 1455.0
If we take 2790 away from 2978, we end up with 188.
Append the next digit (9) from the dividend to 188 and continue with: 1889 / 558

Moving on to step 7:
The number 558 fits into 1889 3 times, leaving a remainder of 215.
Record the quotient 3 as the next digit in the result. 
Result so far: 14553.0
If we take 1674 away from 1889, we end up with 215.
Bring next digit (1) of the dividend behind the 215 and repeat the process: 2151 / 558

Advancing to step 8:
558 can be fit into 2151 3 times, resulting in a remainder of 477.
Put 3 as the next digit of the answer. 
Result so far: 145533.0
The remainder is 477 after subtracting 1674 from 2151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

On to step 9:
If we divide 4770 by 558, we get 8 and a remainder of 306.
Record the quotient 8 as the next digit in the result. 
Result so far: 145533.8
Subtracting 4464 from 4770 leaves us with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

On to step 10:
558 can be fit into 3060 5 times, resulting in a remainder of 270.
The next digit of our result is 5. 
Result so far: 145533.85
Subtracting 2790 from 3060 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 11:
558 can be fit into 2700 4 times, resulting in a remainder of 468.
Write down 4 as next digit of the result. 
Result so far: 145533.854
Subtracting 2232 from 2700 leaves us with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Let's proceed to step 12:
If we divide 4680 by 558, we get 8 and a remainder of 216.
Put 8 as the next digit of the answer. 
Result so far: 145533.8548
Deduct 4464 from 4680 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Let's proceed to step 13:
The number 558 fits into 2160 3 times, leaving a remainder of 486.
The next digit of our result is 3. 
Result so far: 145533.85483
If we take 1674 away from 2160, we end up with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Moving on to step 14:
4860 divided by 558 is 8 with a remainder of 396.
The next digit of our result is 8. 
Result so far: 145533.854838
If we subtract 4464 from 4860, we get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Advancing to step 15:
The number 558 fits into 3960 7 times, leaving a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 145533.8548387
If we subtract 3906 from 3960, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 16:
540 divided by 558 is 0 with a remainder of 540.
Record the quotient 0 as the next digit in the result. 
Result so far: 145533.8548387
The remainder is 540 after subtracting 0 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

The final outcome is 145533.8548387, with a leftover of 5.4e-07.