21305282 ÷ 558 
The aim is to understand the frequency of 558 in 21305282.

On to step 1:
When dividing 2 by 558, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 558

Advancing to step 2:
21 divided by 558 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 558

Going ahead to step 3:
The number 558 fits into 213 0 times, leaving a remainder of 213.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 213 to get 213.
Include the next digit (0) from the dividend after 213, then repeat: 2130 / 558

Advancing to step 4:
2130 divided by 558 is 3 with a remainder of 456.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 1674 from 2130 to get 456.
Grab the next digit (5) from the dividend, add it to 456, then carry on: 4565 / 558

Advancing to step 5:
558 can be fit into 4565 8 times, resulting in a remainder of 101.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtracting 4464 from 4565 leaves us with 101.
Bring next digit (2) of the dividend behind the 101 and repeat the process: 1012 / 558

Let's proceed to step 6:
558 goes into 1012 1 times with a remainder of 454.
Use 1 as the next digit of our solution. 
Result so far: 381.0
Subtracting 558 from 1012 leaves us with 454.
Bring next digit (8) of the dividend behind the 454 and repeat the process: 4548 / 558

Going ahead to step 7:
558 goes into 4548 8 times with a remainder of 84.
Use 8 as the next digit of our solution. 
Result so far: 3818.0
If we subtract 4464 from 4548, we get 84.
Include the next digit (2) from the dividend after 84, then repeat: 842 / 558

Going ahead to step 8:
If we divide 842 by 558, we get 1 and a remainder of 284.
The number 1 becomes the next digit in our result. 
Result so far: 38181.0
Subtracting 558 from 842 leaves us with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Going ahead to step 9:
The number 558 fits into 2840 5 times, leaving a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 38181.5
Subtracting 2790 from 2840 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 10:
558 goes into 500 0 times with a remainder of 500.
The number 0 becomes the next digit in our result. 
Result so far: 38181.5
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 11:
The number 558 fits into 5000 8 times, leaving a remainder of 536.
The next digit of our result is 8. 
Result so far: 38181.508
The remainder is 536 after subtracting 4464 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Advancing to step 12:
The number 558 fits into 5360 9 times, leaving a remainder of 338.
Write down 9 as next digit of the result. 
Result so far: 38181.5089
Subtracting 5022 from 5360 leaves us with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Moving on to step 13:
558 can be fit into 3380 6 times, resulting in a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 38181.50896
Deduct 3348 from 3380 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 14:
When dividing 320 by 558, we get 0 with a remainder of 320.
Put 0 as the next digit of the answer. 
Result so far: 38181.50896
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 15:
3200 divided by 558 is 5 with a remainder of 410.
The number 5 becomes the next digit in our result. 
Result so far: 38181.5089605
If we subtract 2790 from 3200, we get 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Moving on to step 16:
When dividing 4100 by 558, we get 7 with a remainder of 194.
Record the quotient 7 as the next digit in the result. 
Result so far: 38181.50896057
If we subtract 3906 from 4100, we get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Our division results in 38181.50896057 with a remaining 1.94e-07.