Let's divide 2403383 by 558
The aim is to understand the frequency of 558 in 2403383.

On to step 1:
When dividing 2 by 558, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 558

Advancing to step 2:
When dividing 24 by 558, we get 0 with a remainder of 24.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 24 to get 24.
Append the next digit (0) from the dividend to 24 and continue with: 240 / 558

Let's proceed to step 3:
558 can be fit into 240 0 times, resulting in a remainder of 240.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 240 after subtracting 0 from 240.
Include the next digit (3) from the dividend after 240, then repeat: 2403 / 558

Moving on to step 4:
558 can be fit into 2403 4 times, resulting in a remainder of 171.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 2232 from 2403 and we're left with 171.
Take the next digit (3) from the dividend and append it to 171, then repeat: 1713 / 558

On to step 5:
558 can be fit into 1713 3 times, resulting in a remainder of 39.
The next digit of our result is 3. 
Result so far: 43.0
If we take 1674 away from 1713, we end up with 39.
Bring next digit (8) of the dividend behind the 39 and repeat the process: 398 / 558

Let's proceed to step 6:
When dividing 398 by 558, we get 0 with a remainder of 398.
Use 0 as the next digit of our solution. 
Result so far: 430.0
Subtracting 0 from 398 leaves us with 398.
Fetch the next digit (3) from the dividend, attach it to 398 and continue: 3983 / 558

Advancing to step 7:
3983 divided by 558 is 7 with a remainder of 77.
Use 7 as the next digit of our solution. 
Result so far: 4307.0
The remainder is 77 after subtracting 3906 from 3983.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Going ahead to step 8:
770 divided by 558 is 1 with a remainder of 212.
Use 1 as the next digit of our solution. 
Result so far: 4307.1
Deduct 558 from 770 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Moving on to step 9:
558 can be fit into 2120 3 times, resulting in a remainder of 446.
The next digit of our result is 3. 
Result so far: 4307.13
If we subtract 1674 from 2120, we get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

On to step 10:
4460 divided by 558 is 7 with a remainder of 554.
The next digit of our result is 7. 
Result so far: 4307.137
If we subtract 3906 from 4460, we get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Moving on to step 11:
If we divide 5540 by 558, we get 9 and a remainder of 518.
Record the quotient 9 as the next digit in the result. 
Result so far: 4307.1379
The remainder is 518 after subtracting 5022 from 5540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Advancing to step 12:
When dividing 5180 by 558, we get 9 with a remainder of 158.
The next digit of our result is 9. 
Result so far: 4307.13799
If we take 5022 away from 5180, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Our division results in 4307.13799 with a remaining 0.000158.