We look at the division of 21384084 by 558 
We want to divide 21384084 by 558.

Going ahead to step 1:
The number 558 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 558

Step 2:
The number 558 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Take the next digit (3) from the dividend and append it to 21, then repeat: 213 / 558

Going ahead to step 3:
When dividing 213 by 558, we get 0 with a remainder of 213.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 213 leaves us with 213.
Take the next digit (8) from the dividend and append it to 213, then repeat: 2138 / 558

On to step 4:
The number 558 fits into 2138 3 times, leaving a remainder of 464.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 1674 from 2138 and we're left with 464.
Include the next digit (4) from the dividend after 464, then repeat: 4644 / 558

Step 5:
The number 558 fits into 4644 8 times, leaving a remainder of 180.
The next digit of our result is 8. 
Result so far: 38.0
Subtracting 4464 from 4644 leaves us with 180.
Take the next digit (0) from the dividend and append it to 180, then repeat: 1800 / 558

Going ahead to step 6:
The number 558 fits into 1800 3 times, leaving a remainder of 126.
Use 3 as the next digit of our solution. 
Result so far: 383.0
Deduct 1674 from 1800 and we're left with 126.
Bring next digit (8) of the dividend behind the 126 and repeat the process: 1268 / 558

Advancing to step 7:
When dividing 1268 by 558, we get 2 with a remainder of 152.
Record the quotient 2 as the next digit in the result. 
Result so far: 3832.0
If we take 1116 away from 1268, we end up with 152.
Fetch the next digit (4) from the dividend, attach it to 152 and continue: 1524 / 558

Step 8:
The number 558 fits into 1524 2 times, leaving a remainder of 408.
The next digit of our result is 2. 
Result so far: 38322.0
Subtract 1116 from 1524 to get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Let's proceed to step 9:
When dividing 4080 by 558, we get 7 with a remainder of 174.
Put 7 as the next digit of the answer. 
Result so far: 38322.7
The remainder is 174 after subtracting 3906 from 4080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 10:
When dividing 1740 by 558, we get 3 with a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 38322.73
Subtracting 1674 from 1740 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 11:
The number 558 fits into 660 1 times, leaving a remainder of 102.
Put 1 as the next digit of the answer. 
Result so far: 38322.731
Deduct 558 from 660 and we're left with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Advancing to step 12:
When dividing 1020 by 558, we get 1 with a remainder of 462.
Put 1 as the next digit of the answer. 
Result so far: 38322.7311
The remainder is 462 after subtracting 558 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

After the division, we end up with 38322.7311 and a remainder of 0.00462.